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Keratin

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2530: 2554:(1982, 1983). These sequences revealed that there are two distinct but homologous keratin families, which were named type I and type II keratins. By analysis of the primary structures of these keratins and other intermediate filament proteins, Hanukoglu and Fuchs suggested a model in which keratins and intermediate filament proteins contain a central ~310 residue domain with four segments in α-helical conformation that are separated by three short linker segments predicted to be in beta-turn conformation. This model has been confirmed by the determination of the crystal structure of a helical domain of keratins. 211: 3002: 494: 486: 429: 2724: 2974:
Metabolism ceases, and the cells are almost completely filled by keratin. During the process of epithelial differentiation, cells become cornified as keratin protein is incorporated into longer keratin intermediate filaments. Eventually the nucleus and cytoplasmic organelles disappear, metabolism
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These hard, integumentary structures are formed by intercellular cementing of fibers formed from the dead, cornified cells generated by specialized beds deep within the skin. Hair grows continuously and feathers molt and regenerate. The constituent proteins may be phylogenetically homologous but
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as they become fully keratinized. In many other cell types, such as cells of the dermis, keratin filaments and other intermediate filaments function as part of the cytoskeleton to mechanically stabilize the cell against physical stress. It does this through connections to desmosomes, cell–cell
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Cells in the epidermis contain a structural matrix of keratin, which makes this outermost layer of the skin almost waterproof, and along with collagen and elastin gives skin its strength. Rubbing and pressure cause thickening of the outer, cornified layer of the epidermis and form protective
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differ somewhat in chemical structure and supermolecular organization. The evolutionary relationships are complex and only partially known. Multiple genes have been identified for the β-keratins in feathers, and this is probably characteristic of all keratins.
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Not particularly helpful to dump a big list of KRT genes here. Using the source a bit more to explain what each gene and each zone of genes mean will be helpful, as we currently have no particular examples of a hair
4111: 3666: 368:. However, beta sheets are also found in α-keratins. Recent scholarship has shown that sauropsid β-keratins are fundamentally different from α-keratins at a genetic and structural level. The new term 3361: 3356: 4587:
Itakura, Eijun; Tamiya, Sadafumi; Morita, Keisuke; Shiratsuchi, Hideki; Kinoshita, Yoshiaki; Oshiro, Yumi; Oda, Yoshinao; Ohta, Shigeru; Furue, Masutaka; Tsuneyoshi, Masazumi (September 2001).
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Tombolato, Luca; Novitskaya, Ekaterina E.; Chen, Po-Yu; Sheppard, Fred A.; McKittrick, Joanna (February 2010). "Microstructure, elastic properties and deformation mechanisms of horn keratin".
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Shiratsuchi, Hideki; Saito, Tsuyoshi; Sakamoto, Akio; Itakura, Eijun; Tamiya, Sadafumi; Oshiro, Yumi; Oda, Yoshinao; Toh, Satoshi; Komiyama, Sohtaro; Tsuneyoshi, Masazumi (February 2002).
4589:"Subcellular Distribution of Cytokeratin and Vimentin in Malignant Rhabdoid Tumor: Three-Dimensional Imaging with Confocal Laser Scanning Microscopy and Double Immunofluorescence" 3178:
contains doublets about 10 μm across, with cores and coating, and may be arranged in up to 10 layers, also in plaques of variable shape. Adult hornets also use silk as a
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Alibardi, Lorenzo (September 2016). "Sauropsids Cornification is Based on Corneous Beta-Proteins, a Special Type of Keratin-Associated Corneous Proteins of the Epidermis".
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Partenhauser, A; Zupančič, O; Rohrer, J; Bonengel, S; Bernkop-Schnürch, A (2015). "Thiolated silicone oils as adhesive skin protectants for improved barrier function".
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calluses, which are useful for athletes and on the fingertips of musicians who play stringed instruments. Keratinized epidermal cells are constantly shed and replaced.
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Grießinger, JA; Bonengel, S; Partenhauser, A; Ijaz, M; Bernkop-Schnürch, A (2017). "Thiolated polymers: Evaluation of their potential as dermoadhesive excipients".
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Leichner, C; Jelkmann, M; Bernkop-Schnürch, A (2019). "Thiolated polymers: Bioinspired polymers utilizing one of the most important bridging structures in nature".
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Cornification is the process of forming an epidermal barrier in stratified squamous epithelial tissue. At the cellular level, cornification is characterised by:
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Protein sequence alignment of human keratin 1, 2A, 3,4, 5, 6A, 7, and 8 (KRT1 – KRT8). Only the first rod domain is shown above. Alignment was created using
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that may be further coiled. The β-keratins of reptiles and birds have β-pleated sheets twisted together, then stabilized and hardened by disulfide bridges.
2738:, hooves and claws (homologous structures), which are harder and more like their analogs in other vertebrate classes. Hair and other α-keratins consist of 4751: 4548:"Mutation Analysis of Human Cytokeratin 8 Gene in Malignant Rhabdoid Tumor: A Possible Association with Intracytoplasmic Inclusion Body Formation" 2769:' and 'other keratins'. That model is now understood to be correct. A new nuclear addition in 2006 to describe keratins takes this into account. 3136:. Spider silk is typically about 1 to 2 micrometers (μm) thick, compared with about 60 μm for human hair, and more for some mammals. The 3124:
and egg casings, also has twisted β-pleated sheets incorporated into fibers wound into larger supermolecular aggregates. The structure of the
4156: 3707: 3448: 6070: 4521: 3943:"The cDNA sequence of a human epidermal keratin: Divergence of sequence but conservation of structure among intermediate filament proteins" 5435: 5399: 4714: 3325:. Furthermore, the precise expression-pattern of keratin subtypes allows prediction of the origin of the primary tumor when assessing 3085: 472: 4231: 3512: 2657:, with the rest having bulky side groups. The chains are antiparallel, with an alternating C → N orientation. A preponderance of 3566: 2708:
smells of burning hair and skin are due to the volatile sulfur compounds formed. Extensive disulfide bonding contributes to the
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Hawkins, G; Afriat, IR; Xavier, JH; Popescu, LC (2011). "Cosmetic compositions containing thiomers for hair color retention".
192:. Keratin comes in two types, the primitive, softer forms found in all vertebrates and harder, derived forms found only among 6858: 6701: 5428: 5409: 4744: 3023: 2864: 4170:
Fibrous proteins are characterized by a single type of secondary structure: a keratin is a left-handed coil of two a helices
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is classified as keratin, although production of the protein may have evolved independently of the process in vertebrates.
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are often classified as keratins, though it is unclear whether they are phylogenetically related to vertebrate keratins.
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A human toe nail that fell off after a small trauma. Three small punctures were made on it, while it was still attached.
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side groups is characteristic of structural proteins, for which H-bonded close packing is more important than
289:. They are also present in epithelial cells in general. For example, mouse thymic epithelial cells react with 3245: 2731:
The more flexible and elastic keratins of hair have fewer interchain disulfide bridges than the keratins in
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Vincent, Julian F.V; Wegst, Ulrike G.K (July 2004). "Design and mechanical properties of insect cuticle".
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12 and 17. This suggests that they originated from a series of gene duplications on these chromosomes.
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cells from damage or stress. Keratin is extremely insoluble in water and organic solvents. Keratin
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Lee, Chang-Hun; Kim, Min-Sung; Chung, Byung Min; Leahy, Daniel J; Coulombe, Pierre A (July 2012).
6150: 5780: 5343: 5154: 4453: 4410: 4352: 4213: 4033: 3970: 3540: 3334: 3161: 3125: 4525: 164:. Excessive keratinization participate in fortification of certain tissues such as in horns of 3195: 7757: 7548: 7251: 5912: 5348: 5158: 4949: 4694: 4645: 4610: 4569: 4502: 4445: 4402: 4344: 4313: 4205: 4152: 4093: 4025: 3962: 3898: 3846: 3797: 3762: 3703: 3648: 3613: 3532: 3444: 3294: 3263: 2958:
production of small proline-rich (SPRR) proteins and transglutaminase which eventually form a
2662: 7271: 4064:"Structural basis for heteromeric assembly and perinuclear organization of keratin filaments" 7496: 7203: 7188: 7183: 7178: 7173: 7163: 7084: 6793: 6773: 6743: 6738: 6620: 5975: 5970: 5273: 5268: 5229: 5224: 5219: 5214: 5209: 4954: 4818: 4684: 4676: 4637: 4600: 4559: 4492: 4484: 4437: 4394: 4336: 4303: 4295: 4195: 4083: 4075: 4017: 3954: 3888: 3880: 3836: 3828: 3789: 3752: 3744: 3640: 3605: 3524: 3480: 3366: 3175: 2547: 55: 7413: 7408: 7403: 7398: 7153: 7143: 7133: 7128: 7099: 6803: 6798: 5845: 5733: 5723: 5698: 5678: 5582: 5562: 4628:
Mercer, Derry K; Stewart, Colin S (1 January 2019). "Keratin hydrolysis by dermatophytes".
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Le-Vinh, B; Steinbring, C; Nguyen Le, NM; Matuszczak, B; Bernkop-Schnürch, A (2023).
4356: 4299: 4021: 3958: 3725:"New Aspects of the α-Helix to β-Sheet Transition in Stretched Hard α-Keratin Fibers" 3558: 3544: 3271: 3059: 2743: 2698: 2678: 2596:
motif to multimerise, forming filaments consisting of multiple copies of the keratin
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junctional plaques, and hemidesmosomes, cell-basement membrane adhesive structures.
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It has been proposed that keratins can be divided into 'hard' and 'soft' forms, or '
7509: 6564: 6319: 5863: 5455: 5306: 3290: 3282: 2830: 2615: 2551: 502: 376: 309: 278: 210: 7481: 7459: 4398: 3485: 4665:"Toward unraveling the complexity of simple epithelial keratins in human disease" 3644: 2681:, the distinguishing feature of keratins is the presence of large amounts of the 2653:, considered a β-keratin, can have these two as 75–80% of the total, with 10–15% 7655: 7606: 7476: 7366: 6696: 6140: 6095: 6014: 5936: 5484: 5384: 5313: 5049: 4994: 3748: 3215: 3157: 3145: 3001: 2766: 2739: 333: 199: 97: 5420: 4340: 7707: 7626: 7616: 7504: 6615: 6594: 6360: 6297: 6292: 6287: 6267: 6242: 6230: 6216: 6211: 6206: 6201: 6196: 6191: 6186: 6181: 6176: 6038: 5920: 5909: 5895: 5511: 5015: 4663:
Omary, M. Bishr; Ku, Nam-On; Strnad, Pavel; Hanada, Shinichiro (1 July 2009).
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Journal of Experimental Zoology Part B: Molecular and Developmental Evolution
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that confer additional strength and rigidity by permanent, thermally stable
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Hickman, Cleveland Pendleton; Roberts, Larry S.; Larson, Allan L. (2003).
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Abnormal growth of keratin can occur in a variety of conditions including
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depend on the organization of multiple adjacent protein chains into hard,
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The human genome has 54 functional annotated Keratin genes, 28 are in the
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The neutral–basic keratins are encoded on chromosome 12 (12q13.13).
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antimicrobial humoral immune response mediated by antimicrobial peptide
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Fibrous keratin molecules supercoil to form a very stable, left-handed
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for keratin 5, keratin 8, and keratin 14. These antibodies are used as
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obsolete negative regulation of cytolysis by symbiont of host cells
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loss of nuclei and organelles, in the final stages of cornification
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Keratin expression is helpful in determining epithelial origin in
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Mutations in keratin gene expression can lead to, among others:
3117: 3099: 2747: 2697:—in much the same way that non-protein sulfur bridges stabilize 2647: 2631: 2623: 2291:
cell differentiation involved in embryonic placenta development
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cell differentiation involved in embryonic placenta development
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Schweizer J, Bowden PE, Coulombe PA, et al. (July 2006).
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and many other non-chordate animals seem to have only type VI
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Hair-Science.com's entry on the microscopic elements of hair
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List of keratins expressed in the human integumentary system
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List of cutaneous conditions caused by mutations in keratins
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Keratin is highly resistant to digestive acids if ingested.
372:(CBP) has been proposed to avoid confusion with α-keratins. 4140:
Voet, Donald; Voet, Judith G.; Pratt, Charlotte W. (1998).
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Kreplak, L.; Doucet, J.; Dumas, P.; Briki, F. (July 2004).
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on spiders' tails, and the contributions of their interior
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The acidic keratins are encoded on chromosome 17 (17q21.2).
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of keratins, except in a small number of solvents such as
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negative regulation of entry of bacterium into host cell
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obsolete Golgi to plasma membrane CFTR protein transport
233:(α-keratins) are found in all vertebrates. They form the 73: 3815:
Moll, Roland; Divo, Markus; Langbein, Lutz (June 2008).
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coiled single protein strands (with regular intra-chain
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The major force that keeps the coiled-coil structure is
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Keratins: Their composition, structure and biosynthesis
4112:"Type II Keratin - an overview | ScienceDirect Topics" 3443:. Bannerstone House: Charles C Thomas. pp. 3–6. 3190:
Glues made from partially-hydrolysed keratin include
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positive regulation of cell population proliferation
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negative regulation of epithelial cell proliferation
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The keratins include the following proteins of which
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H Bragulla, Hermann; G Homberger, Dominique (2009).
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that may be expelled orally or excreted. In humans,
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regions of varying size, alternating with flexible,
2746:), which are then further twisted into superhelical 70: 7690: 7589: 7495: 7450: 7359: 7338: 7290: 7113: 6905: 6857: 6709: 6695: 6661: 6608: 6577: 6557: 6436: 6318: 6149: 6131: 6120: 6063: 5856: 5535: 5492: 5483: 5469: 5462: 5373: 5289: 5195: 5145: 4874: 4791: 4782: 4771: 3869:"New consensus nomenclature for mammalian keratins" 3026:. Unsourced material may be challenged and removed. 2546:The first sequences of keratins were determined by 58: 3941:Hanukoglu, Israel; Fuchs, Elaine (November 1982). 3691: 3999: 3997: 3995: 3257:large cell lung carcinoma with rhabdoid phenotype 2251:tumor necrosis factor-mediated signaling pathway 1172:tumor necrosis factor-mediated signaling pathway 1148:positive regulation of hair follicle development 656:Table of keratin genes and biological processes ( 3171:, developed as a silk substitute. Silk from the 2704:. Human hair is approximately 14% cysteine. The 2099:intermediate filament cytoskeleton organization 1987:intermediate filament cytoskeleton organization 1515:intermediate filament cytoskeleton organization 1204:intermediate filament cytoskeleton organization 1060:intermediate filament cytoskeleton organization 876:regulation of translation in response to stress 4182:Hanukoglu, Israel; Ezra, Liora (January 2014). 3862: 3860: 3337:express CK7, CK8 and CK18, while metastases of 2642:also has a high percentage of both glycine and 4004:Hanukoglu, Israel; Fuchs, Elaine (July 1983). 2611:residues along the keratins helical segments. 2115:hematopoietic progenitor cell differentiation 100:. It is the key structural material making up 5436: 4745: 3309:cancers. Tumors that express keratin include 3160:. A somewhat analogous situation occurs with 2614:Limited interior space is the reason why the 1340:positive regulation of epidermis development 804:positive regulation of epidermis development 740:negative regulation of inflammatory response 652:have been used to describe keratins past 20. 8: 4188:Biochemistry and Molecular Biology Education 1923:defense response to Gram-positive bacterium 45:Microscopy of keratin filaments inside cells 3817:"The human keratins: biology and pathology" 3462: 3460: 2443:regulation of keratinocyte differentiation 1699:regulation of keratinocyte differentiation 1188:Golgi to plasma membrane protein transport 301:epithelial cells in genetic studies of the 6706: 6146: 6128: 5489: 5480: 5466: 5443: 5429: 5421: 4788: 4779: 4752: 4738: 4730: 654: 285:; these are proteins which have undergone 96:(α-keratin) is a type of keratin found in 4715:Composition and β-sheet structure of silk 4688: 4604: 4563: 4496: 4307: 4199: 4087: 4068:Nature Structural & Molecular Biology 3917:"GeneCards - Human Genes | Gene Database" 3892: 3840: 3756: 3484: 3086:Learn how and when to remove this message 2677:In addition to intra- and intermolecular 1196:negative regulation of apoptotic process 473:Learn how and when to remove this message 364:. These keratins are formed primarily in 132:among vertebrates. Keratin also protects 2787: 40: 4142:"Proteins: Three-Dimensional Structure" 3382: 3281:regularly ingest hair as part of their 222:are made of keratin covering a core of 3285:, leading to the gradual formation of 2618:of the (unrelated) structural protein 2299:extrinsic apoptotic signaling pathway 1212:extrinsic apoptotic signaling pathway 1020:negative regulation of cell migration 940:intermediate filament bundle assembly 852:cornea development in camera-type eye 676:complement activation, lectin pathway 3590:Arthropod Structure & Development 3132:, provide remarkable control of fast 1851:intermediate filament polymerization 261:of mammals, and the slime threads of 7: 3698:. Dubuque, IA: McGraw-Hill. p.  3333:typically express CK8 and CK18, and 3024:adding citations to reliable sources 2634:, likewise has a high percentage of 1931:cytolysis by host of symbiont cells 5400:Cartilage oligomeric matrix protein 2577:Keratin (high molecular weight) in 2523:intermediate filament organization 2483:intermediate filament organization 2467:intermediate filament organization 2435:intermediate filament organization 2403:intermediate filament organization 2363:intermediate filament organization 2339:intermediate filament organization 2323:intermediate filament organization 2259:intermediate filament organization 2235:intermediate filament organization 2219:intermediate filament organization 2203:intermediate filament organization 2171:intermediate filament organization 2131:intermediate filament organization 2107:intermediate filament organization 2083:intermediate filament organization 2059:intermediate filament organization 2035:intermediate filament organization 2011:intermediate filament organization 1995:intermediate filament organization 1971:intermediate filament organization 1915:intermediate filament organization 1859:intermediate filament organization 1843:regulation of protein localization 1803:intermediate filament organization 1779:intermediate filament organization 1747:intermediate filament organization 1731:intermediate filament organization 1715:intermediate filament organization 1691:intermediate filament organization 1667:intermediate filament organization 1651:anatomical structure morphogenesis 1643:intermediate filament organization 1619:intermediate filament organization 1587:intermediate filament organization 1571:intermediate filament organization 1547:intermediate filament organization 1523:intermediate filament organization 1483:intermediate filament organization 1452:intermediate filament organization 1404:intermediate filament organization 1380:intermediate filament organization 1332:intermediate filament organization 1260:intermediate filament organization 1164:anatomical structure morphogenesis 1140:positive regulation of translation 1132:intermediate filament organization 1100:positive regulation of cell growth 1068:intermediate filament organization 972:intermediate filament organization 932:intermediate filament organization 884:intermediate filament organization 724:intermediate filament organization 312:(β-keratins) are found only in the 84:) is one of a family of structural 144:, which are tough and form strong 25: 4669:Journal of Clinical Investigation 4524:. Amonline.net.au. Archived from 4168:from the original on 2006-09-17. 3419:Merriam-Webster Online Dictionary 2275:response to hydrostatic pressure 413:fibers that structure the nucleus 6071:Wiskott–Aldrich syndrome protein 4300:10.1111/j.1469-7580.2009.01066.x 4263:from the original on 13 May 2014 3694:Integrated principles of zoology 3000: 2780:end-to-end into long filaments. 2638:. The connective tissue protein 2507:epithelial cell differentiation 1819:response to mechanical stimulus 1795:epithelial cell differentiation 1763:epithelial cell differentiation 1739:epithelial cell differentiation 1723:epithelial cell differentiation 1707:epithelial cell differentiation 1683:epithelial cell differentiation 1659:epithelial cell differentiation 1635:epithelial cell differentiation 1603:epithelial cell differentiation 1579:epithelial cell differentiation 1563:epithelial cell differentiation 1539:epithelial cell differentiation 1499:epithelial cell differentiation 1396:epithelial cell differentiation 1388:regulation of protein secretion 1372:epithelial cell differentiation 1364:cellular response to starvation 1244:epithelial cell differentiation 1108:epithelial cell differentiation 1028:epithelial cell differentiation 964:epithelial cell differentiation 916:epithelial cell differentiation 868:epithelial cell differentiation 844:epithelial cell differentiation 796:epithelial cell differentiation 427: 297:to distinguish subsets of mouse 184:matter known to approximate the 54: 7292:Microtubule organising proteins 4122:from the original on 2023-03-28 4044:from the original on 2021-01-26 3981:from the original on 2021-01-26 3923:from the original on 2023-05-13 3821:Histochemistry and Cell Biology 3569:from the original on 1 May 2021 3493:from the original on 2022-09-19 3011:needs additional citations for 1875:morphogenesis of an epithelium 1092:morphogenesis of an epithelium 980:morphogenesis of an epithelium 820:morphogenesis of an epithelium 764:morphogenesis of an epithelium 324:. They are found in the nails, 4234:. Elmhurst.edu. Archived from 1084:establishment of skin barrier 812:protein heterotetramerization 756:establishment of skin barrier 748:protein heterotetramerization 505:encodes 54 functional keratin 281:in the hornified layer of the 148:epidermal appendages found in 140:assemble into bundles to form 1: 7339:Microtubule severing proteins 4399:10.1080/03639045.2016.1231809 3486:10.1016/j.pmatsci.2015.06.001 3473:Progress in Materials Science 3236:Ichthyosis bullosa of Siemens 3231:Epidermolysis bullosa simplex 3156:regions where the chains are 2307:hepatocyte apoptotic process 1827:regulation of cell migration 1220:hepatocyte apoptotic process 1012:keratinocyte differentiation 908:keratinocyte differentiation 788:keratinocyte differentiation 692:response to oxidative stress 509:, located in two clusters on 387:that have been found only in 5999:actin depolymerizing factors 5164:Cartilage associated protein 4725:Proteopedia page on keratins 4149:Fundamentals of Biochemistry 4022:10.1016/0092-8674(83)90034-x 3959:10.1016/0092-8674(82)90424-x 3645:10.1016/j.actbio.2009.06.033 3241:Epidermolytic hyperkeratosis 2179:sebaceous gland development 2019:hair follicle morphogenesis 1475:hair follicle morphogenesis 1436:hair follicle morphogenesis 1116:hair follicle morphogenesis 375:Keratins (also described as 7477:Plakoglobin (gamma catenin) 3749:10.1529/biophysj.103.036749 3563:Webster's Online Dictionary 3351:Keratin-associated proteins 3341:express CK20, but not CK7. 3255:Rhabdoid cell formation in 2975:ceases and cells undergo a 2962:beneath the plasma membrane 2283:response to other organism 1324:keratinocyte proliferation 732:regulation of angiogenesis 447:. The specific problem is: 7784: 4522:"Spiders – Silk structure" 4341:10.1016/j.addr.2019.04.007 3262:Several diseases, such as 2566:family, and 26 are in the 2411:hair follicle development 2139:cytoskeleton organization 1755:cytoskeleton organization 1420:cytoskeleton organization 996:cytoskeleton organization 948:stem cell differentiation 860:cytoskeleton organization 443:to meet Knowledge (XXG)'s 273:are also made of keratin. 29: 27:Structural fibrous protein 7733: 4606:10.1038/modpathol.3880401 4565:10.1038/modpathol.3880506 4477:ACS Appl Mater Interfaces 3833:10.1007/s00418-008-0435-6 3610:10.1016/j.asd.2004.05.006 3511:Nasoori, Alireza (2020). 3331:hepatocellular carcinomas 1284:keratinocyte development 269:plates of filter-feeding 188:of keratinized tissue is 128:, and the outer layer of 7703:Prokaryotic cytoskeleton 2966:terminal differentiation 2605:hydrophobic interactions 1316:keratinocyte activation 1236:Notch signaling pathway 30:Not to be confused with 3439:Fraser, R.D.B. (1972). 3323:trophoblastic neoplasms 3246:Steatocystoma multiplex 2960:cornified cell envelope 2685:-containing amino acid 2581:cell and oval cells of 2267:sarcomere organization 1348:keratinocyte migration 1268:sarcomere organization 1076:keratinocyte migration 1052:innate immune response 4489:10.1021/acsami.3c09337 4151:. Wiley. p. 158. 3274:that feed on keratin. 2885:stratified epithelium 2774:intermediate filaments 2772:Keratin filaments are 2728: 2589: 2538: 2499:epidermis development 2451:epidermis development 2379:epidermis development 2147:epidermis development 1811:epidermis development 1627:epidermis development 1555:epidermis development 1531:epidermis development 1300:peptide cross-linking 1292:epidermis development 988:inflammatory response 956:epidermis development 900:epidermis development 836:epidermis development 780:peptide cross-linking 772:epidermis development 700:peptide cross-linking 498: 490: 409:intermediate filaments 385:intermediate filaments 383:of type I and type II 227: 206:Examples of occurrence 196:(reptiles and birds). 142:intermediate filaments 46: 6323:(hard alpha-keratins) 6154:(soft alpha-keratins) 5178:Procollagen peptidase 4116:www.sciencedirect.com 3885:10.1083/jcb.200603161 3394:2nd edition, 1989 as 3339:colorectal carcinomas 3202:Clinical significance 3144:useful properties of 3116:Silk found in insect 2955:production of keratin 2865:stratified epithelium 2753:Thiolated polymers (= 2726: 2576: 2558:Type 1 and 2 Keratins 2532: 1955:ectoderm development 1891:cell differentiation 1252:response to estrogen 496: 488: 370:corneous beta protein 316:, that is all living 213: 44: 7738:cytoskeletal defects 7698:Major sperm proteins 4387:Drug Dev. Ind. Pharm 4335:. 151–152: 191–221. 3020:improve this article 2667:chemical specificity 455:improve this section 6151:Epithelial keratins 4483:(34): 40304–40316. 4232:"Secondary Protein" 3794:10.1002/jez.b.22689 3741:2004BpJ....87..640K 3729:Biophysical Journal 3602:2004ArtSD..33..187V 3335:cholangiocarcinomas 3251:Keratosis pharyngis 2905:squamous epithelium 2689:, required for the 2347:biological_process 2187:biological_process 2067:biological_process 2043:biological_process 1675:biological_process 1491:biological_process 1467:biological_process 1412:biological_process 1228:cell-cell adhesion 684:retina homeostasis 668:Biological process 661: 295:fluorescent markers 243:outer layer of skin 5344:Matrix gla protein 5155:Prolyl hydroxylase 4642:10.1093/mmy/myx160 4333:Adv Drug Deliv Rev 4288:Journal of Anatomy 4257:"What is Keratin?" 3633:Acta Biomaterialia 3517:Biological Reviews 3467:Wang, Bin (2016). 3424:2017-09-22 at the 3412:2013-05-09 at the 2940:simple epithelium 2761:Filament formation 2729: 2590: 2539: 1356:apoptotic process 828:visual perception 655: 499: 491: 332:, in some reptile 228: 47: 7745: 7744: 7686: 7685: 7446: 7445: 6691: 6690: 6573: 6572: 6116: 6115: 6059: 6058: 5418: 5417: 5369: 5368: 5191: 5190: 5159:Lysyl hydroxylase 4950:basement membrane 4442:10.1111/ics.12284 4430:Int. J. Cosm. Sci 4201:10.1002/bmb.20746 4158:978-0-471-58650-0 4080:10.1038/nsmb.2330 3709:978-0-07-243940-3 3529:10.1111/brv.12597 3450:978-0-398-02283-9 3295:Rapunzel syndrome 3283:grooming behavior 3182:, as do spiders. 3096: 3095: 3088: 3070: 2944: 2943: 2921:ductal epithelia 2691:disulfide bridges 2673:Disulfide bridges 2542:Protein structure 2527: 2526: 2515:skin development 2427:nail development 483: 482: 475: 445:quality standards 436:This section may 275:Keratin filaments 180:. The only other 16:(Redirected from 7775: 6707: 6147: 6129: 5490: 5481: 5467: 5445: 5438: 5431: 5422: 4789: 4780: 4754: 4747: 4740: 4731: 4703: 4702: 4692: 4681:10.1172/JCI37762 4675:(7): 1794–1805. 4660: 4654: 4653: 4630:Medical Mycology 4625: 4619: 4618: 4608: 4593:Modern Pathology 4584: 4578: 4577: 4567: 4552:Modern Pathology 4543: 4537: 4536: 4534: 4533: 4517: 4511: 4510: 4500: 4468: 4462: 4461: 4425: 4419: 4418: 4382: 4376: 4375: 4367: 4361: 4360: 4328: 4322: 4321: 4311: 4279: 4273: 4272: 4270: 4268: 4253: 4247: 4246: 4244: 4243: 4228: 4222: 4221: 4203: 4179: 4173: 4172: 4167: 4146: 4137: 4131: 4130: 4128: 4127: 4108: 4102: 4101: 4091: 4059: 4053: 4052: 4050: 4049: 4001: 3990: 3989: 3987: 3986: 3938: 3932: 3931: 3929: 3928: 3913: 3907: 3906: 3896: 3864: 3855: 3854: 3844: 3812: 3806: 3805: 3777: 3771: 3770: 3760: 3720: 3714: 3713: 3697: 3687: 3681: 3680: 3678: 3677: 3663: 3657: 3656: 3628: 3622: 3621: 3585: 3579: 3578: 3576: 3574: 3555: 3549: 3548: 3508: 3502: 3501: 3499: 3498: 3488: 3464: 3455: 3454: 3436: 3430: 3404: 3398: 3397: 3387: 3367:List of keratins 3272:infectious fungi 3270:, are caused by 3091: 3084: 3080: 3077: 3071: 3069: 3028: 3004: 2996: 2977:programmed death 2794:(neutral-basic) 2788: 2548:Israel Hanukoglu 2491:spermatogenesis 662: 478: 471: 467: 464: 458: 431: 430: 423: 277:are abundant in 86:fibrous proteins 83: 82: 79: 78: 75: 72: 69: 66: 63: 60: 21: 7783: 7782: 7778: 7777: 7776: 7774: 7773: 7772: 7748: 7747: 7746: 7741: 7729: 7682: 7585: 7491: 7442: 7355: 7334: 7286: 7109: 6901: 6853: 6699: 6687: 6657: 6604: 6569: 6553: 6437:Ungrouped alpha 6432: 6322: 6314: 6153: 6139: 6133: 6123: 6112: 6055: 5852: 5531: 5473: 5458: 5449: 5419: 5414: 5365: 5285: 5187: 5141: 5024:transmembrane: 4870: 4774: 4767: 4758: 4711: 4706: 4662: 4661: 4657: 4627: 4626: 4622: 4586: 4585: 4581: 4545: 4544: 4540: 4531: 4529: 4519: 4518: 4514: 4470: 4469: 4465: 4427: 4426: 4422: 4384: 4383: 4379: 4372:Us20110229430A1 4369: 4368: 4364: 4330: 4329: 4325: 4281: 4280: 4276: 4266: 4264: 4255: 4254: 4250: 4241: 4239: 4230: 4229: 4225: 4181: 4180: 4176: 4165: 4159: 4144: 4139: 4138: 4134: 4125: 4123: 4110: 4109: 4105: 4061: 4060: 4056: 4047: 4045: 4003: 4002: 3993: 3984: 3982: 3940: 3939: 3935: 3926: 3924: 3915: 3914: 3910: 3866: 3865: 3858: 3814: 3813: 3809: 3779: 3778: 3774: 3722: 3721: 3717: 3710: 3689: 3688: 3684: 3675: 3673: 3665: 3664: 3660: 3630: 3629: 3625: 3587: 3586: 3582: 3572: 3570: 3565:. 22 May 2023. 3557: 3556: 3552: 3523:(4): 986–1019. 3510: 3509: 3505: 3496: 3494: 3466: 3465: 3458: 3451: 3438: 3437: 3433: 3426:Wayback Machine 3414:Wayback Machine 3407:Entry "keratin" 3405: 3401: 3388: 3384: 3380: 3347: 3329:. For example, 3303: 3226:Alopecia areata 3204: 3188: 3158:randomly coiled 3092: 3081: 3075: 3072: 3029: 3027: 3017: 3005: 2994: 2949: 2827:stratum corneum 2786: 2763: 2675: 2560: 2544: 2475:keratinization 2459:keratinization 2419:keratinization 2387:keratinization 2355:keratinization 2331:keratinization 2315:keratinization 2243:keratinization 2227:keratinization 2211:keratinization 2195:keratinization 2155:keratinization 2123:keratinization 2091:keratinization 2075:keratinization 2051:keratinization 2027:keratinization 2003:keratinization 1979:keratinization 1963:keratinization 1899:keratinization 1835:keratinization 1771:keratinization 1507:keratinization 1308:keratinization 1124:keratinization 1036:keratinization 708:keratinization 479: 468: 462: 459: 452: 432: 428: 421: 360:, and claws of 328:, and claws of 208: 57: 53: 39: 28: 23: 22: 15: 12: 11: 5: 7781: 7779: 7771: 7770: 7765: 7760: 7750: 7749: 7743: 7742: 7734: 7731: 7730: 7728: 7727: 7726: 7725: 7720: 7715: 7710: 7700: 7694: 7692: 7688: 7687: 7684: 7683: 7681: 7680: 7675: 7670: 7669: 7668: 7663: 7653: 7648: 7647: 7646: 7636: 7635: 7634: 7629: 7624: 7619: 7614: 7609: 7604: 7602:Corneodesmosin 7593: 7591: 7587: 7586: 7584: 7583: 7582: 7581: 7576: 7571: 7566: 7561: 7556: 7551: 7541: 7540: 7539: 7534: 7529: 7519: 7514: 7513: 7512: 7501: 7499: 7493: 7492: 7490: 7489: 7484: 7479: 7474: 7473: 7472: 7462: 7456: 7454: 7448: 7447: 7444: 7443: 7441: 7440: 7439: 7438: 7433: 7428: 7418: 7417: 7416: 7411: 7406: 7401: 7396: 7386: 7381: 7380: 7379: 7369: 7363: 7361: 7357: 7356: 7354: 7353: 7348: 7342: 7340: 7336: 7335: 7333: 7332: 7327: 7322: 7317: 7312: 7307: 7302: 7296: 7294: 7288: 7287: 7285: 7284: 7279: 7274: 7269: 7264: 7259: 7254: 7249: 7244: 7239: 7234: 7229: 7224: 7217: 7216: 7211: 7206: 7201: 7196: 7191: 7186: 7181: 7176: 7171: 7166: 7161: 7156: 7151: 7146: 7141: 7136: 7131: 7126: 7119: 7117: 7111: 7110: 7108: 7107: 7102: 7097: 7092: 7087: 7082: 7077: 7072: 7067: 7062: 7057: 7052: 7047: 7042: 7037: 7032: 7027: 7022: 7017: 7012: 7007: 7002: 6997: 6992: 6987: 6982: 6977: 6972: 6967: 6962: 6957: 6952: 6947: 6942: 6937: 6932: 6927: 6922: 6917: 6911: 6909: 6903: 6902: 6900: 6899: 6894: 6889: 6884: 6879: 6874: 6869: 6863: 6861: 6855: 6854: 6852: 6851: 6846: 6841: 6836: 6831: 6826: 6821: 6816: 6811: 6806: 6801: 6796: 6791: 6786: 6781: 6776: 6771: 6766: 6761: 6756: 6751: 6746: 6741: 6736: 6731: 6726: 6721: 6715: 6713: 6704: 6693: 6692: 6689: 6688: 6686: 6685: 6680: 6675: 6669:Nuclear lamins 6665: 6663: 6659: 6658: 6656: 6655: 6650: 6645: 6644: 6643: 6638: 6633: 6623: 6618: 6612: 6610: 6606: 6605: 6603: 6602: 6597: 6592: 6587: 6581: 6579: 6575: 6574: 6571: 6570: 6568: 6567: 6561: 6559: 6555: 6554: 6552: 6551: 6550: 6549: 6544: 6539: 6534: 6529: 6524: 6519: 6514: 6509: 6504: 6491: 6490: 6489: 6488: 6483: 6478: 6473: 6468: 6463: 6458: 6453: 6440: 6438: 6434: 6433: 6431: 6430: 6429: 6428: 6423: 6418: 6413: 6408: 6403: 6386: 6385: 6384: 6383: 6378: 6373: 6368: 6363: 6358: 6353: 6348: 6343: 6326: 6324: 6316: 6315: 6313: 6312: 6311: 6310: 6305: 6300: 6295: 6290: 6285: 6280: 6275: 6270: 6265: 6248: 6247: 6246: 6245: 6235: 6234: 6233: 6221: 6220: 6219: 6214: 6209: 6204: 6199: 6194: 6189: 6184: 6179: 6174: 6157: 6155: 6144: 6126: 6118: 6117: 6114: 6113: 6111: 6110: 6105: 6100: 6099: 6098: 6093: 6088: 6078: 6073: 6067: 6065: 6061: 6060: 6057: 6056: 6054: 6053: 6048: 6047: 6046: 6041: 6031: 6026: 6025: 6024: 6019: 6018: 6017: 6012: 5995: 5993:Arp2/3 complex 5990: 5989: 5988: 5983: 5978: 5973: 5962: 5961: 5960: 5959: 5954: 5949: 5944: 5934: 5933: 5932: 5918: 5907: 5888: 5887: 5886: 5881: 5876: 5871: 5860: 5858: 5854: 5853: 5851: 5850: 5849: 5848: 5843: 5838: 5833: 5828: 5823: 5818: 5813: 5808: 5803: 5798: 5793: 5788: 5778: 5777: 5776: 5771: 5763: 5762: 5761: 5753: 5752: 5751: 5743: 5742: 5741: 5736: 5728: 5727: 5726: 5721: 5713: 5712: 5711: 5703: 5702: 5701: 5696: 5691: 5683: 5682: 5681: 5676: 5668: 5667: 5666: 5661: 5656: 5651: 5646: 5641: 5636: 5631: 5626: 5621: 5616: 5611: 5606: 5601: 5596: 5588: 5587: 5586: 5580: 5575: 5570: 5565: 5560: 5555: 5550: 5541: 5539: 5533: 5532: 5530: 5529: 5524: 5519: 5514: 5509: 5504: 5498: 5496: 5487: 5478: 5471:Microfilaments 5464: 5460: 5459: 5450: 5448: 5447: 5440: 5433: 5425: 5416: 5415: 5413: 5412: 5407: 5403: 5402: 5397: 5392: 5387: 5377: 5375: 5371: 5370: 5367: 5366: 5364: 5363: 5362: 5361: 5356: 5346: 5341: 5336: 5331: 5326: 5321: 5316: 5311: 5310: 5309: 5299: 5293: 5291: 5287: 5286: 5284: 5283: 5282: 5281: 5276: 5271: 5261: 5260: 5259: 5254: 5249: 5244: 5234: 5233: 5232: 5227: 5222: 5217: 5212: 5201: 5199: 5193: 5192: 5189: 5188: 5186: 5185: 5180: 5175: 5170: 5161: 5151: 5149: 5143: 5142: 5140: 5139: 5134: 5129: 5128: 5127: 5122: 5112: 5102: 5101: 5100: 5095: 5085: 5075: 5074: 5073: 5068: 5063: 5058: 5044: 5043: 5038: 5033: 5028: 5021: 5020: 5019: 5018: 5013: 5001: 4991: 4990: 4989: 4988: 4983: 4978: 4973: 4968: 4963: 4946: 4945: 4940: 4935: 4930: 4925: 4920: 4915: 4905: 4904: 4903: 4898: 4893: 4878: 4876: 4872: 4871: 4869: 4868: 4863: 4858: 4857: 4856: 4851: 4846: 4834: 4827: 4815: 4814: 4813: 4808: 4795: 4793: 4792:Fibril forming 4786: 4777: 4773:Extracellular 4769: 4768: 4765:scleroproteins 4759: 4757: 4756: 4749: 4742: 4734: 4728: 4727: 4722: 4717: 4710: 4709:External links 4707: 4705: 4704: 4655: 4620: 4599:(9): 854–861. 4579: 4558:(2): 146–153. 4538: 4512: 4463: 4436:(3): 257–265. 4420: 4393:(2): 204–212. 4377: 4362: 4323: 4294:(4): 516–559. 4274: 4248: 4223: 4174: 4157: 4132: 4103: 4074:(7): 707–715. 4054: 4016:(3): 915–924. 3991: 3953:(1): 243–252. 3933: 3908: 3856: 3827:(6): 705–733. 3807: 3788:(6): 338–351. 3772: 3735:(1): 640–647. 3715: 3708: 3682: 3658: 3639:(2): 319–330. 3623: 3596:(3): 187–199. 3580: 3550: 3503: 3456: 3449: 3431: 3399: 3381: 3379: 3376: 3375: 3374: 3369: 3364: 3359: 3354: 3346: 3343: 3302: 3301:Diagnostic use 3299: 3264:athlete's foot 3260: 3259: 3253: 3248: 3243: 3238: 3233: 3228: 3212:hyperkeratosis 3203: 3200: 3187: 3184: 3094: 3093: 3008: 3006: 2999: 2993: 2990: 2972: 2971: 2968: 2963: 2956: 2948: 2945: 2942: 2941: 2938: 2929: 2923: 2922: 2919: 2914: 2908: 2907: 2902: 2893: 2887: 2886: 2883: 2874: 2868: 2867: 2862: 2857: 2851: 2850: 2845: 2840: 2834: 2833: 2824: 2815: 2805: 2804: 2801: 2795: 2785: 2782: 2762: 2759: 2679:hydrogen bonds 2674: 2671: 2568:Keratin type 2 2564:Keratin type 1 2559: 2556: 2543: 2540: 2525: 2524: 2521: 2517: 2516: 2513: 2509: 2508: 2505: 2501: 2500: 2497: 2493: 2492: 2489: 2485: 2484: 2481: 2477: 2476: 2473: 2469: 2468: 2465: 2461: 2460: 2457: 2453: 2452: 2449: 2445: 2444: 2441: 2437: 2436: 2433: 2429: 2428: 2425: 2421: 2420: 2417: 2413: 2412: 2409: 2405: 2404: 2401: 2397: 2396: 2393: 2389: 2388: 2385: 2381: 2380: 2377: 2373: 2372: 2369: 2365: 2364: 2361: 2357: 2356: 2353: 2349: 2348: 2345: 2341: 2340: 2337: 2333: 2332: 2329: 2325: 2324: 2321: 2317: 2316: 2313: 2309: 2308: 2305: 2301: 2300: 2297: 2293: 2292: 2289: 2285: 2284: 2281: 2277: 2276: 2273: 2269: 2268: 2265: 2261: 2260: 2257: 2253: 2252: 2249: 2245: 2244: 2241: 2237: 2236: 2233: 2229: 2228: 2225: 2221: 2220: 2217: 2213: 2212: 2209: 2205: 2204: 2201: 2197: 2196: 2193: 2189: 2188: 2185: 2181: 2180: 2177: 2173: 2172: 2169: 2165: 2164: 2161: 2157: 2156: 2153: 2149: 2148: 2145: 2141: 2140: 2137: 2133: 2132: 2129: 2125: 2124: 2121: 2117: 2116: 2113: 2109: 2108: 2105: 2101: 2100: 2097: 2093: 2092: 2089: 2085: 2084: 2081: 2077: 2076: 2073: 2069: 2068: 2065: 2061: 2060: 2057: 2053: 2052: 2049: 2045: 2044: 2041: 2037: 2036: 2033: 2029: 2028: 2025: 2021: 2020: 2017: 2013: 2012: 2009: 2005: 2004: 2001: 1997: 1996: 1993: 1989: 1988: 1985: 1981: 1980: 1977: 1973: 1972: 1969: 1965: 1964: 1961: 1957: 1956: 1953: 1949: 1948: 1945: 1941: 1940: 1937: 1933: 1932: 1929: 1925: 1924: 1921: 1917: 1916: 1913: 1909: 1908: 1907:wound healing 1905: 1901: 1900: 1897: 1893: 1892: 1889: 1885: 1884: 1881: 1877: 1876: 1873: 1869: 1868: 1865: 1861: 1860: 1857: 1853: 1852: 1849: 1845: 1844: 1841: 1837: 1836: 1833: 1829: 1828: 1825: 1821: 1820: 1817: 1813: 1812: 1809: 1805: 1804: 1801: 1797: 1796: 1793: 1789: 1788: 1785: 1781: 1780: 1777: 1773: 1772: 1769: 1765: 1764: 1761: 1757: 1756: 1753: 1749: 1748: 1745: 1741: 1740: 1737: 1733: 1732: 1729: 1725: 1724: 1721: 1717: 1716: 1713: 1709: 1708: 1705: 1701: 1700: 1697: 1693: 1692: 1689: 1685: 1684: 1681: 1677: 1676: 1673: 1669: 1668: 1665: 1661: 1660: 1657: 1653: 1652: 1649: 1645: 1644: 1641: 1637: 1636: 1633: 1629: 1628: 1625: 1621: 1620: 1617: 1613: 1612: 1609: 1605: 1604: 1601: 1597: 1596: 1593: 1589: 1588: 1585: 1581: 1580: 1577: 1573: 1572: 1569: 1565: 1564: 1561: 1557: 1556: 1553: 1549: 1548: 1545: 1541: 1540: 1537: 1533: 1532: 1529: 1525: 1524: 1521: 1517: 1516: 1513: 1509: 1508: 1505: 1501: 1500: 1497: 1493: 1492: 1489: 1485: 1484: 1481: 1477: 1476: 1473: 1469: 1468: 1465: 1461: 1460: 1458: 1454: 1453: 1450: 1446: 1445: 1442: 1438: 1437: 1434: 1430: 1429: 1426: 1422: 1421: 1418: 1414: 1413: 1410: 1406: 1405: 1402: 1398: 1397: 1394: 1390: 1389: 1386: 1382: 1381: 1378: 1374: 1373: 1370: 1366: 1365: 1362: 1358: 1357: 1354: 1350: 1349: 1346: 1342: 1341: 1338: 1334: 1333: 1330: 1326: 1325: 1322: 1318: 1317: 1314: 1310: 1309: 1306: 1302: 1301: 1298: 1294: 1293: 1290: 1286: 1285: 1282: 1278: 1277: 1274: 1270: 1269: 1266: 1262: 1261: 1258: 1254: 1253: 1250: 1246: 1245: 1242: 1238: 1237: 1234: 1230: 1229: 1226: 1222: 1221: 1218: 1214: 1213: 1210: 1206: 1205: 1202: 1198: 1197: 1194: 1190: 1189: 1186: 1182: 1181: 1178: 1174: 1173: 1170: 1166: 1165: 1162: 1158: 1157: 1154: 1150: 1149: 1146: 1142: 1141: 1138: 1134: 1133: 1130: 1126: 1125: 1122: 1118: 1117: 1114: 1110: 1109: 1106: 1102: 1101: 1098: 1094: 1093: 1090: 1086: 1085: 1082: 1078: 1077: 1074: 1070: 1069: 1066: 1062: 1061: 1058: 1054: 1053: 1050: 1046: 1045: 1042: 1038: 1037: 1034: 1030: 1029: 1026: 1022: 1021: 1018: 1014: 1013: 1010: 1006: 1005: 1002: 998: 997: 994: 990: 989: 986: 982: 981: 978: 974: 973: 970: 966: 965: 962: 958: 957: 954: 950: 949: 946: 942: 941: 938: 934: 933: 930: 926: 925: 922: 918: 917: 914: 910: 909: 906: 902: 901: 898: 894: 893: 890: 886: 885: 882: 878: 877: 874: 870: 869: 866: 862: 861: 858: 854: 853: 850: 846: 845: 842: 838: 837: 834: 830: 829: 826: 822: 821: 818: 814: 813: 810: 806: 805: 802: 798: 797: 794: 790: 789: 786: 782: 781: 778: 774: 773: 770: 766: 765: 762: 758: 757: 754: 750: 749: 746: 742: 741: 738: 734: 733: 730: 726: 725: 722: 718: 717: 714: 710: 709: 706: 702: 701: 698: 694: 693: 690: 686: 685: 682: 678: 677: 674: 670: 669: 666: 481: 480: 435: 433: 426: 420: 417: 352:), and in the 287:keratinization 231:Alpha-keratins 207: 204: 90:scleroproteins 88:also known as 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 7780: 7769: 7766: 7764: 7761: 7759: 7756: 7755: 7753: 7740: 7739: 7732: 7724: 7721: 7719: 7716: 7714: 7711: 7709: 7706: 7705: 7704: 7701: 7699: 7696: 7695: 7693: 7689: 7679: 7676: 7674: 7671: 7667: 7664: 7662: 7659: 7658: 7657: 7654: 7652: 7649: 7645: 7642: 7641: 7640: 7637: 7633: 7630: 7628: 7625: 7623: 7620: 7618: 7615: 7613: 7610: 7608: 7605: 7603: 7600: 7599: 7598: 7595: 7594: 7592: 7588: 7580: 7577: 7575: 7572: 7570: 7567: 7565: 7562: 7560: 7557: 7555: 7552: 7550: 7547: 7546: 7545: 7542: 7538: 7535: 7533: 7530: 7528: 7525: 7524: 7523: 7520: 7518: 7515: 7511: 7508: 7507: 7506: 7503: 7502: 7500: 7498: 7494: 7488: 7485: 7483: 7482:Delta catenin 7480: 7478: 7475: 7471: 7468: 7467: 7466: 7463: 7461: 7460:Alpha catenin 7458: 7457: 7455: 7453: 7449: 7437: 7434: 7432: 7429: 7427: 7424: 7423: 7422: 7419: 7415: 7412: 7410: 7407: 7405: 7402: 7400: 7397: 7395: 7392: 7391: 7390: 7387: 7385: 7382: 7378: 7375: 7374: 7373: 7370: 7368: 7365: 7364: 7362: 7358: 7352: 7349: 7347: 7344: 7343: 7341: 7337: 7331: 7328: 7326: 7323: 7321: 7318: 7316: 7313: 7311: 7308: 7306: 7303: 7301: 7298: 7297: 7295: 7293: 7289: 7283: 7280: 7278: 7275: 7273: 7270: 7268: 7265: 7263: 7260: 7258: 7255: 7253: 7250: 7248: 7245: 7243: 7240: 7238: 7235: 7233: 7230: 7228: 7225: 7223: 7220:cytoplasmic: 7219: 7218: 7215: 7212: 7210: 7207: 7205: 7202: 7200: 7197: 7195: 7192: 7190: 7187: 7185: 7182: 7180: 7177: 7175: 7172: 7170: 7167: 7165: 7162: 7160: 7157: 7155: 7152: 7150: 7147: 7145: 7142: 7140: 7137: 7135: 7132: 7130: 7127: 7125: 7121: 7120: 7118: 7116: 7112: 7106: 7103: 7101: 7098: 7096: 7093: 7091: 7088: 7086: 7083: 7081: 7078: 7076: 7073: 7071: 7068: 7066: 7063: 7061: 7058: 7056: 7053: 7051: 7048: 7046: 7043: 7041: 7038: 7036: 7033: 7031: 7028: 7026: 7023: 7021: 7018: 7016: 7013: 7011: 7008: 7006: 7003: 7001: 6998: 6996: 6993: 6991: 6988: 6986: 6983: 6981: 6978: 6976: 6973: 6971: 6968: 6966: 6963: 6961: 6958: 6956: 6953: 6951: 6948: 6946: 6943: 6941: 6938: 6936: 6933: 6931: 6928: 6926: 6923: 6921: 6918: 6916: 6913: 6912: 6910: 6908: 6904: 6898: 6895: 6893: 6890: 6888: 6885: 6883: 6880: 6878: 6875: 6873: 6870: 6868: 6865: 6864: 6862: 6860: 6856: 6850: 6847: 6845: 6842: 6840: 6837: 6835: 6832: 6830: 6827: 6825: 6822: 6820: 6817: 6815: 6812: 6810: 6807: 6805: 6802: 6800: 6797: 6795: 6792: 6790: 6787: 6785: 6782: 6780: 6777: 6775: 6772: 6770: 6767: 6765: 6762: 6760: 6757: 6755: 6752: 6750: 6747: 6745: 6742: 6740: 6737: 6735: 6732: 6730: 6727: 6725: 6722: 6720: 6717: 6716: 6714: 6712: 6708: 6705: 6703: 6698: 6694: 6684: 6681: 6679: 6676: 6674: 6670: 6667: 6666: 6664: 6660: 6654: 6651: 6649: 6646: 6642: 6639: 6637: 6634: 6632: 6629: 6628: 6627: 6626:Neurofilament 6624: 6622: 6619: 6617: 6614: 6613: 6611: 6607: 6601: 6598: 6596: 6593: 6591: 6588: 6586: 6583: 6582: 6580: 6576: 6566: 6563: 6562: 6560: 6556: 6548: 6545: 6543: 6540: 6538: 6535: 6533: 6530: 6528: 6525: 6523: 6520: 6518: 6515: 6513: 6510: 6508: 6505: 6503: 6500: 6499: 6498: 6497: 6496:chromosome 12 6493: 6492: 6487: 6484: 6482: 6479: 6477: 6474: 6472: 6469: 6467: 6464: 6462: 6459: 6457: 6454: 6452: 6449: 6448: 6447: 6446: 6445:chromosome 17 6442: 6441: 6439: 6435: 6427: 6424: 6422: 6419: 6417: 6414: 6412: 6409: 6407: 6404: 6402: 6399: 6398: 6397: 6396: 6395:chromosome 12 6392: 6388: 6387: 6382: 6379: 6377: 6374: 6372: 6369: 6367: 6364: 6362: 6359: 6357: 6354: 6352: 6349: 6347: 6344: 6342: 6339: 6338: 6337: 6336: 6335:chromosome 17 6332: 6328: 6327: 6325: 6321: 6320:Hair keratins 6317: 6309: 6306: 6304: 6301: 6299: 6296: 6294: 6291: 6289: 6286: 6284: 6281: 6279: 6276: 6274: 6271: 6269: 6266: 6264: 6261: 6260: 6259: 6258: 6257:chromosome 12 6254: 6250: 6249: 6244: 6241: 6240: 6239: 6236: 6232: 6229: 6228: 6227: 6226: 6225:chromosome 12 6222: 6218: 6215: 6213: 6210: 6208: 6205: 6203: 6200: 6198: 6195: 6193: 6190: 6188: 6185: 6183: 6180: 6178: 6175: 6173: 6170: 6169: 6168: 6167: 6166:chromosome 17 6163: 6159: 6158: 6156: 6152: 6148: 6145: 6142: 6137: 6130: 6127: 6125: 6122:Intermediate 6119: 6109: 6106: 6104: 6101: 6097: 6094: 6092: 6089: 6087: 6084: 6083: 6082: 6079: 6077: 6074: 6072: 6069: 6068: 6066: 6062: 6052: 6049: 6045: 6042: 6040: 6037: 6036: 6035: 6032: 6030: 6027: 6023: 6020: 6016: 6013: 6011: 6008: 6007: 6006: 6003: 6002: 6001: 6000: 5996: 5994: 5991: 5987: 5984: 5982: 5979: 5977: 5974: 5972: 5969: 5968: 5967: 5964: 5963: 5958: 5955: 5953: 5950: 5948: 5945: 5943: 5940: 5939: 5938: 5935: 5931: 5928: 5925: 5922: 5919: 5917: 5914: 5911: 5908: 5906: 5903: 5900: 5897: 5894: 5893: 5892: 5889: 5885: 5882: 5880: 5877: 5875: 5872: 5870: 5867: 5866: 5865: 5862: 5861: 5859: 5855: 5847: 5844: 5842: 5839: 5837: 5834: 5832: 5829: 5827: 5824: 5822: 5819: 5817: 5814: 5812: 5809: 5807: 5804: 5802: 5799: 5797: 5794: 5792: 5789: 5787: 5784: 5783: 5782: 5779: 5775: 5772: 5770: 5767: 5766: 5764: 5760: 5757: 5756: 5754: 5750: 5747: 5746: 5744: 5740: 5737: 5735: 5732: 5731: 5729: 5725: 5722: 5720: 5717: 5716: 5714: 5710: 5707: 5706: 5704: 5700: 5697: 5695: 5692: 5690: 5687: 5686: 5684: 5680: 5677: 5675: 5672: 5671: 5669: 5665: 5662: 5660: 5657: 5655: 5652: 5650: 5647: 5645: 5642: 5640: 5637: 5635: 5632: 5630: 5627: 5625: 5622: 5620: 5617: 5615: 5612: 5610: 5607: 5605: 5602: 5600: 5597: 5595: 5592: 5591: 5589: 5584: 5581: 5579: 5576: 5574: 5571: 5569: 5566: 5564: 5561: 5559: 5556: 5554: 5551: 5549: 5546: 5545: 5543: 5542: 5540: 5538: 5534: 5528: 5525: 5523: 5520: 5518: 5515: 5513: 5510: 5508: 5505: 5503: 5500: 5499: 5497: 5495: 5491: 5488: 5486: 5482: 5479: 5477: 5472: 5468: 5465: 5461: 5457: 5453: 5446: 5441: 5439: 5434: 5432: 5427: 5426: 5423: 5411: 5408: 5405: 5404: 5401: 5398: 5396: 5393: 5391: 5388: 5386: 5382: 5379: 5378: 5376: 5372: 5360: 5357: 5355: 5352: 5351: 5350: 5347: 5345: 5342: 5340: 5337: 5335: 5332: 5330: 5327: 5325: 5322: 5320: 5317: 5315: 5312: 5308: 5305: 5304: 5303: 5300: 5298: 5295: 5294: 5292: 5288: 5280: 5277: 5275: 5272: 5270: 5267: 5266: 5265: 5262: 5258: 5255: 5253: 5250: 5248: 5245: 5243: 5240: 5239: 5238: 5235: 5231: 5228: 5226: 5223: 5221: 5218: 5216: 5213: 5211: 5208: 5207: 5206: 5203: 5202: 5200: 5198: 5194: 5184: 5183:Lysyl oxidase 5181: 5179: 5176: 5174: 5171: 5169: 5165: 5162: 5160: 5156: 5153: 5152: 5150: 5148: 5144: 5138: 5135: 5133: 5130: 5126: 5123: 5121: 5118: 5117: 5116: 5113: 5110: 5106: 5103: 5099: 5096: 5094: 5091: 5090: 5089: 5086: 5083: 5079: 5076: 5072: 5069: 5067: 5064: 5062: 5059: 5057: 5054: 5053: 5052: 5051: 5046: 5045: 5042: 5039: 5037: 5034: 5032: 5029: 5027: 5023: 5022: 5017: 5014: 5012: 5009: 5008: 5007: 5006: 5002: 5000: 4996: 4993: 4992: 4987: 4984: 4982: 4979: 4977: 4974: 4972: 4969: 4967: 4964: 4962: 4959: 4958: 4957: 4956: 4951: 4948: 4947: 4944: 4941: 4939: 4936: 4934: 4931: 4929: 4926: 4924: 4921: 4919: 4916: 4913: 4909: 4906: 4902: 4899: 4897: 4894: 4892: 4889: 4888: 4887: 4883: 4880: 4879: 4877: 4873: 4867: 4864: 4862: 4859: 4855: 4852: 4850: 4847: 4845: 4842: 4841: 4840: 4839: 4835: 4833: 4832: 4828: 4825: 4821: 4820: 4816: 4812: 4809: 4807: 4804: 4803: 4802: 4801: 4797: 4796: 4794: 4790: 4787: 4785: 4781: 4778: 4776: 4770: 4766: 4762: 4755: 4750: 4748: 4743: 4741: 4736: 4735: 4732: 4726: 4723: 4721: 4718: 4716: 4713: 4712: 4708: 4700: 4696: 4691: 4686: 4682: 4678: 4674: 4670: 4666: 4659: 4656: 4651: 4647: 4643: 4639: 4635: 4631: 4624: 4621: 4616: 4612: 4607: 4602: 4598: 4594: 4590: 4583: 4580: 4575: 4571: 4566: 4561: 4557: 4553: 4549: 4542: 4539: 4528:on 2009-05-08 4527: 4523: 4516: 4513: 4508: 4504: 4499: 4494: 4490: 4486: 4482: 4478: 4474: 4467: 4464: 4459: 4455: 4451: 4447: 4443: 4439: 4435: 4431: 4424: 4421: 4416: 4412: 4408: 4404: 4400: 4396: 4392: 4388: 4381: 4378: 4373: 4366: 4363: 4358: 4354: 4350: 4346: 4342: 4338: 4334: 4327: 4324: 4319: 4315: 4310: 4305: 4301: 4297: 4293: 4289: 4285: 4278: 4275: 4262: 4258: 4252: 4249: 4238:on 2010-09-22 4237: 4233: 4227: 4224: 4219: 4215: 4211: 4207: 4202: 4197: 4193: 4189: 4185: 4178: 4175: 4171: 4164: 4160: 4154: 4150: 4143: 4136: 4133: 4121: 4117: 4113: 4107: 4104: 4099: 4095: 4090: 4085: 4081: 4077: 4073: 4069: 4065: 4058: 4055: 4043: 4039: 4035: 4031: 4027: 4023: 4019: 4015: 4011: 4007: 4000: 3998: 3996: 3992: 3980: 3976: 3972: 3968: 3964: 3960: 3956: 3952: 3948: 3944: 3937: 3934: 3922: 3918: 3912: 3909: 3904: 3900: 3895: 3890: 3886: 3882: 3879:(2): 169–74. 3878: 3874: 3870: 3863: 3861: 3857: 3852: 3848: 3843: 3838: 3834: 3830: 3826: 3822: 3818: 3811: 3808: 3803: 3799: 3795: 3791: 3787: 3783: 3776: 3773: 3768: 3764: 3759: 3754: 3750: 3746: 3742: 3738: 3734: 3730: 3726: 3719: 3716: 3711: 3705: 3701: 3696: 3695: 3686: 3683: 3672: 3668: 3662: 3659: 3654: 3650: 3646: 3642: 3638: 3634: 3627: 3624: 3619: 3615: 3611: 3607: 3603: 3599: 3595: 3591: 3584: 3581: 3568: 3564: 3560: 3554: 3551: 3546: 3542: 3538: 3534: 3530: 3526: 3522: 3518: 3514: 3507: 3504: 3492: 3487: 3482: 3478: 3474: 3470: 3463: 3461: 3457: 3452: 3446: 3442: 3435: 3432: 3428: 3427: 3423: 3420: 3415: 3411: 3408: 3403: 3400: 3393: 3392: 3386: 3383: 3377: 3373: 3370: 3368: 3365: 3363: 3360: 3358: 3355: 3352: 3349: 3348: 3344: 3342: 3340: 3336: 3332: 3328: 3324: 3320: 3316: 3312: 3308: 3300: 3298: 3296: 3292: 3288: 3284: 3280: 3275: 3273: 3269: 3265: 3258: 3254: 3252: 3249: 3247: 3244: 3242: 3239: 3237: 3234: 3232: 3229: 3227: 3224: 3223: 3222: 3219: 3217: 3213: 3209: 3201: 3199: 3197: 3193: 3185: 3183: 3181: 3177: 3174: 3170: 3166: 3163: 3159: 3155: 3151: 3147: 3143: 3139: 3135: 3131: 3127: 3123: 3119: 3114: 3112: 3108: 3104: 3101: 3090: 3087: 3079: 3068: 3065: 3061: 3058: 3054: 3051: 3047: 3044: 3040: 3037: –  3036: 3032: 3031:Find sources: 3025: 3021: 3015: 3014: 3009:This article 3007: 3003: 2998: 2997: 2991: 2989: 2985: 2981: 2978: 2969: 2967: 2964: 2961: 2957: 2954: 2953: 2952: 2947:Cornification 2946: 2939: 2937: 2933: 2930: 2928: 2925: 2924: 2920: 2918: 2915: 2913: 2910: 2909: 2906: 2903: 2901: 2897: 2894: 2892: 2889: 2888: 2884: 2882: 2878: 2875: 2873: 2870: 2869: 2866: 2863: 2861: 2858: 2856: 2853: 2852: 2849: 2846: 2844: 2841: 2839: 2836: 2835: 2832: 2831:keratinocytes 2828: 2825: 2823: 2819: 2816: 2814: 2810: 2807: 2806: 2802: 2799: 2796: 2793: 2790: 2789: 2783: 2781: 2779: 2775: 2770: 2768: 2760: 2758: 2756: 2751: 2749: 2745: 2741: 2737: 2734: 2725: 2721: 2719: 2715: 2711: 2707: 2703: 2700: 2696: 2692: 2688: 2684: 2680: 2672: 2670: 2668: 2664: 2660: 2656: 2652: 2649: 2645: 2641: 2637: 2633: 2629: 2625: 2621: 2617: 2612: 2610: 2606: 2601: 2599: 2595: 2587: 2584: 2580: 2575: 2571: 2569: 2565: 2557: 2555: 2553: 2549: 2541: 2536: 2535:Clustal Omega 2531: 2522: 2519: 2518: 2514: 2511: 2510: 2506: 2503: 2502: 2498: 2495: 2494: 2490: 2487: 2486: 2482: 2479: 2478: 2474: 2471: 2470: 2466: 2463: 2462: 2458: 2455: 2454: 2450: 2447: 2446: 2442: 2439: 2438: 2434: 2431: 2430: 2426: 2423: 2422: 2418: 2415: 2414: 2410: 2407: 2406: 2402: 2399: 2398: 2394: 2391: 2390: 2386: 2383: 2382: 2378: 2375: 2374: 2370: 2367: 2366: 2362: 2359: 2358: 2354: 2351: 2350: 2346: 2343: 2342: 2338: 2335: 2334: 2330: 2327: 2326: 2322: 2319: 2318: 2314: 2311: 2310: 2306: 2303: 2302: 2298: 2295: 2294: 2290: 2287: 2286: 2282: 2279: 2278: 2274: 2271: 2270: 2266: 2263: 2262: 2258: 2255: 2254: 2250: 2247: 2246: 2242: 2239: 2238: 2234: 2231: 2230: 2226: 2223: 2222: 2218: 2215: 2214: 2210: 2207: 2206: 2202: 2199: 2198: 2194: 2191: 2190: 2186: 2183: 2182: 2178: 2175: 2174: 2170: 2167: 2166: 2163:pigmentation 2162: 2159: 2158: 2154: 2151: 2150: 2146: 2143: 2142: 2138: 2135: 2134: 2130: 2127: 2126: 2122: 2119: 2118: 2114: 2111: 2110: 2106: 2103: 2102: 2098: 2095: 2094: 2090: 2087: 2086: 2082: 2079: 2078: 2074: 2071: 2070: 2066: 2063: 2062: 2058: 2055: 2054: 2050: 2047: 2046: 2042: 2039: 2038: 2034: 2031: 2030: 2026: 2023: 2022: 2018: 2015: 2014: 2010: 2007: 2006: 2002: 1999: 1998: 1994: 1991: 1990: 1986: 1983: 1982: 1978: 1975: 1974: 1970: 1967: 1966: 1962: 1959: 1958: 1954: 1951: 1950: 1946: 1943: 1942: 1938: 1935: 1934: 1930: 1927: 1926: 1922: 1919: 1918: 1914: 1911: 1910: 1906: 1903: 1902: 1898: 1895: 1894: 1890: 1887: 1886: 1882: 1879: 1878: 1874: 1871: 1870: 1866: 1863: 1862: 1858: 1855: 1854: 1850: 1847: 1846: 1842: 1839: 1838: 1834: 1831: 1830: 1826: 1823: 1822: 1818: 1815: 1814: 1810: 1807: 1806: 1802: 1799: 1798: 1794: 1791: 1790: 1786: 1783: 1782: 1778: 1775: 1774: 1770: 1767: 1766: 1762: 1759: 1758: 1754: 1751: 1750: 1746: 1743: 1742: 1738: 1735: 1734: 1730: 1727: 1726: 1722: 1719: 1718: 1714: 1711: 1710: 1706: 1703: 1702: 1698: 1695: 1694: 1690: 1687: 1686: 1682: 1679: 1678: 1674: 1671: 1670: 1666: 1663: 1662: 1658: 1655: 1654: 1650: 1647: 1646: 1642: 1639: 1638: 1634: 1631: 1630: 1626: 1623: 1622: 1618: 1615: 1614: 1610: 1607: 1606: 1602: 1599: 1598: 1594: 1591: 1590: 1586: 1583: 1582: 1578: 1575: 1574: 1570: 1567: 1566: 1562: 1559: 1558: 1554: 1551: 1550: 1546: 1543: 1542: 1538: 1535: 1534: 1530: 1527: 1526: 1522: 1519: 1518: 1514: 1511: 1510: 1506: 1503: 1502: 1498: 1495: 1494: 1490: 1487: 1486: 1482: 1479: 1478: 1474: 1471: 1470: 1466: 1463: 1462: 1459: 1456: 1455: 1451: 1448: 1447: 1443: 1440: 1439: 1435: 1432: 1431: 1427: 1424: 1423: 1419: 1416: 1415: 1411: 1408: 1407: 1403: 1400: 1399: 1395: 1392: 1391: 1387: 1384: 1383: 1379: 1376: 1375: 1371: 1368: 1367: 1363: 1360: 1359: 1355: 1352: 1351: 1347: 1344: 1343: 1339: 1336: 1335: 1331: 1328: 1327: 1323: 1320: 1319: 1315: 1312: 1311: 1307: 1304: 1303: 1299: 1296: 1295: 1291: 1288: 1287: 1283: 1280: 1279: 1275: 1272: 1271: 1267: 1264: 1263: 1259: 1256: 1255: 1251: 1248: 1247: 1243: 1240: 1239: 1235: 1232: 1231: 1227: 1224: 1223: 1219: 1216: 1215: 1211: 1208: 1207: 1203: 1200: 1199: 1195: 1192: 1191: 1187: 1184: 1183: 1179: 1176: 1175: 1171: 1168: 1167: 1163: 1160: 1159: 1155: 1152: 1151: 1147: 1144: 1143: 1139: 1136: 1135: 1131: 1128: 1127: 1123: 1120: 1119: 1115: 1112: 1111: 1107: 1104: 1103: 1099: 1096: 1095: 1091: 1088: 1087: 1083: 1080: 1079: 1075: 1072: 1071: 1067: 1064: 1063: 1059: 1056: 1055: 1051: 1048: 1047: 1043: 1040: 1039: 1035: 1032: 1031: 1027: 1024: 1023: 1019: 1016: 1015: 1011: 1008: 1007: 1003: 1000: 999: 995: 992: 991: 987: 984: 983: 979: 976: 975: 971: 968: 967: 963: 960: 959: 955: 952: 951: 947: 944: 943: 939: 936: 935: 931: 928: 927: 923: 920: 919: 915: 912: 911: 907: 904: 903: 899: 896: 895: 891: 888: 887: 883: 880: 879: 875: 872: 871: 867: 864: 863: 859: 856: 855: 851: 848: 847: 843: 840: 839: 835: 832: 831: 827: 824: 823: 819: 816: 815: 811: 808: 807: 803: 800: 799: 795: 792: 791: 787: 784: 783: 779: 776: 775: 771: 768: 767: 763: 760: 759: 755: 752: 751: 747: 744: 743: 739: 736: 735: 731: 728: 727: 723: 720: 719: 716:fibrinolysis 715: 712: 711: 707: 704: 703: 699: 696: 695: 691: 688: 687: 683: 680: 679: 675: 672: 671: 667: 664: 663: 659: 653: 651: 647: 643: 639: 635: 631: 627: 623: 619: 615: 611: 607: 603: 599: 595: 591: 587: 583: 579: 575: 571: 567: 563: 559: 555: 551: 547: 543: 539: 535: 531: 527: 523: 519: 514: 512: 508: 504: 495: 487: 477: 474: 466: 456: 451: 446: 442: 441: 434: 425: 424: 418: 416: 414: 410: 406: 402: 398: 394: 390: 386: 382: 378: 373: 371: 367: 363: 359: 355: 351: 347: 343: 339: 335: 331: 327: 323: 319: 315: 311: 310:beta-keratins 306: 304: 300: 296: 292: 288: 284: 280: 279:keratinocytes 276: 272: 268: 264: 260: 256: 252: 248: 244: 240: 236: 232: 225: 221: 217: 212: 205: 203: 201: 197: 195: 191: 187: 183: 179: 175: 171: 167: 163: 159: 155: 151: 147: 146:unmineralized 143: 139: 135: 131: 127: 123: 119: 115: 111: 107: 103: 99: 95: 94:Alpha-keratin 91: 87: 81: 51: 43: 37: 33: 19: 18:Cornification 7768:Skin anatomy 7763:Cytoskeleton 7735: 7510:Dystroglycan 7465:Beta catenin 6697:Microtubules 6565:Beta-keratin 6494: 6443: 6389: 6329: 6251: 6237: 6223: 6160: 6135: 5997: 5864:Tropomodulin 5456:cytoskeleton 5380: 5307:Tropoelastin 5263: 5236: 5204: 5114: 5104: 5087: 5077: 5048: 5003: 4953: 4907: 4885: 4836: 4829: 4817: 4798: 4672: 4668: 4658: 4636:(1): 13–22. 4633: 4629: 4623: 4596: 4592: 4582: 4555: 4551: 4541: 4530:. Retrieved 4526:the original 4515: 4480: 4476: 4466: 4433: 4429: 4423: 4390: 4386: 4380: 4371: 4365: 4332: 4326: 4291: 4287: 4277: 4265:. Retrieved 4259:. WiseGEEK. 4251: 4240:. Retrieved 4236:the original 4226: 4194:(1): 93–94. 4191: 4187: 4177: 4169: 4148: 4135: 4124:. Retrieved 4115: 4106: 4071: 4067: 4057: 4046:. Retrieved 4013: 4009: 3983:. Retrieved 3950: 3946: 3936: 3925:. Retrieved 3911: 3876: 3873:J. Cell Biol 3872: 3824: 3820: 3810: 3785: 3781: 3775: 3732: 3728: 3718: 3693: 3685: 3674:. Retrieved 3670: 3661: 3636: 3632: 3626: 3593: 3589: 3583: 3571:. Retrieved 3562: 3553: 3520: 3516: 3506: 3495:. Retrieved 3476: 3472: 3440: 3434: 3417: 3402: 3389: 3385: 3304: 3293:may lead to 3291:trichophagia 3276: 3261: 3220: 3205: 3189: 3142:commercially 3138:biologically 3115: 3105:produced by 3097: 3082: 3076:January 2022 3073: 3063: 3056: 3049: 3042: 3030: 3018:Please help 3013:verification 3010: 2986: 2982: 2973: 2950: 2797: 2791: 2771: 2767:cytokeratins 2764: 2752: 2730: 2714:dissociating 2710:insolubility 2695:crosslinking 2676: 2661:with small, 2616:triple helix 2613: 2602: 2594:superhelical 2591: 2561: 2552:Elaine Fuchs 2545: 515: 503:human genome 500: 469: 463:October 2022 460: 453:Please help 448: 437: 401:urochordates 377:cytokeratins 374: 369: 307: 274: 229: 198: 89: 49: 48: 7656:Plakophilin 7607:Desmoplakin 7367:Tau protein 6141:Cytokeratin 5937:Tropomyosin 5485:Myofilament 5385:Cytokeratin 5314:Vitronectin 4995:multiplexin 4520:Australia. 3479:: 229–318. 3216:keratoderma 3150:crystalline 3146:silk fibers 3122:spider webs 2803:Occurrence 2740:α-helically 2736:fingernails 2663:nonreactive 2659:amino acids 2622:, found in 2395:hair cycle 1611:hair cycle 1444:hair cycle 1156:cell cycle 1044:hair cycle 924:hair cycle 511:chromosomes 457:if you can. 393:vertebrates 366:beta sheets 308:The harder 237:(including 200:Spider silk 98:vertebrates 7752:Categories 7736:See also: 7708:Crescentin 7627:Periplakin 7617:Envoplakin 7505:Dystrophin 7122:axonemal: 6616:Internexin 6595:Peripherin 5016:Endostatin 5005:type XVIII 4532:2010-09-23 4242:2010-09-23 4126:2023-03-28 4048:2019-07-03 3985:2019-07-03 3927:2023-05-08 3676:2022-01-07 3497:2019-07-03 3396:/ˈkɛrətɪn/ 3378:References 3372:Keratinase 3327:metastases 3311:carcinomas 3307:anaplastic 3126:spinnerets 3046:newspapers 2936:keratin 20 2932:keratin 18 2917:keratin 19 2900:keratin 17 2896:keratin 16 2881:keratin 15 2877:keratin 14 2860:keratin 13 2843:keratin 12 2822:keratin 10 2699:vulcanized 2570:family. 340:, such as 338:Testudines 314:sauropsids 291:antibodies 194:sauropsids 182:biological 174:armadillos 158:amphibians 134:epithelial 7325:Centrin 3 7320:Centrin 2 7315:Centrin 1 6653:Syncoilin 6558:Not alpha 6124:filaments 6076:Fibrillin 5395:Reticulin 5088:type VIII 4357:135464452 3667:"Keratin" 3559:"Keratin" 3545:216556342 3287:hairballs 3208:keratosis 3196:horn glue 3192:hoof glue 3162:synthetic 3154:amorphous 3134:extrusion 3120:, and in 3035:"Keratin" 2927:keratin 8 2912:keratin 7 2891:keratin 6 2872:keratin 5 2855:keratin 4 2838:keratin 3 2818:keratin 9 2813:keratin 2 2809:keratin 1 2800:(acidic) 2778:annealing 2744:H-bonding 2733:mammalian 2628:cartilage 2579:bile duct 658:GeneCards 405:Nematodes 389:chordates 283:epidermis 186:toughness 178:osteoderm 7758:Keratins 7691:Nonhuman 7651:Vinculin 7612:Dystonin 7544:Spectrin 7517:Utrophin 7497:Membrane 7452:Catenins 7384:Stathmin 7372:Dynactin 7252:DYNC2LI1 7247:DYNC1LI2 7242:DYNC1LI1 6907:Kinesins 6711:Tubulins 6600:Vimentin 6132:Type 1/2 6034:Profilin 6029:Gelsolin 5891:Troponin 5452:Proteins 5410:diseases 5406:See also 5349:Tectorin 5168:Leprecan 5078:type VII 4908:type XII 4831:type III 4784:Collagen 4699:19587454 4650:29361043 4615:11557780 4574:11850543 4507:37594415 4498:10472333 4458:38357104 4450:26444859 4415:19045608 4407:27585266 4349:31028759 4318:19422428 4261:Archived 4218:30720797 4210:24265184 4163:Archived 4120:Archived 4098:22705788 4042:Archived 4038:21490380 3979:Archived 3975:35796315 3921:Archived 3903:16831889 3851:18461349 3802:27506161 3767:15240497 3653:19577667 3618:18089034 3573:9 August 3567:Archived 3537:32338826 3491:Archived 3422:Archived 3410:Archived 3353:(KRTAPs) 3345:See also 3319:sarcomas 3315:thymomas 3268:ringworm 3167:such as 3165:polymers 3103:fibroins 2755:thiomers 2720:agents. 2718:reducing 2687:cysteine 2620:collagen 2607:between 450:keratin. 438:require 397:amphioxi 381:polymers 354:feathers 350:terrapin 342:tortoise 330:reptiles 318:reptiles 150:reptiles 138:monomers 114:feathers 36:Creatine 32:Carotene 7678:PLEKHA7 7632:Plectin 7597:Plakins 7522:Ankyrin 7421:Dynamin 7351:Spastin 7346:Katanin 7310:CAMSAP3 7305:CAMSAP2 7300:CAMSAP1 7272:DYNLRB2 7267:DYNLRB1 7237:DYNC1I2 7232:DYNC1I1 7227:DYNC2H1 7222:DYNC1H1 7115:Dyneins 6839:TUBGCP6 6834:TUBGCP5 6829:TUBGCP4 6824:TUBGCP3 6819:TUBGCP2 6648:Synemin 6391:type II 6253:type II 6136:Keratin 6081:Filamin 6022:Destrin 6005:Cofilin 5966:Actinin 5537:Myosins 5454:of the 5390:Gelatin 5381:Keratin 5329:Decorin 5302:Elastin 5197:Laminin 5173:ADAMTS2 5147:Enzymes 5137:COL28A1 5132:COL27A1 5125:COL11A2 5120:COL11A1 5115:type XI 5109:COL10A1 5050:type VI 5047:other: 5041:COL25A1 5036:COL23A1 5031:COL17A1 5026:COL13A1 5011:COL18A1 4999:COL15A1 4955:type IV 4943:COL22A1 4938:COL21A1 4933:COL20A1 4928:COL19A1 4923:COL16A1 4918:COL14A1 4912:COL12A1 4886:type IX 4866:COL26A1 4861:COL24A1 4819:type II 4761:Protein 4690:2701867 4309:2736122 4089:3864793 4030:6191871 3967:6186381 3894:2064177 3842:2386534 3758:1304386 3737:Bibcode 3671:VEDANTU 3598:Bibcode 3111:spiders 3107:insects 3060:scholar 2784:Pairing 2706:pungent 2651:fibroin 2644:alanine 2640:elastin 2636:glycine 2598:monomer 1616:KRT33B 1608:KRT33B 1600:KRT33B 1592:KRT33B 1584:KRT33A 1576:KRT33A 665:Symbol 440:cleanup 263:hagfish 241:), the 218:of the 162:mammals 50:Keratin 7579:SPTBN5 7574:SPTBN4 7569:SPTBN2 7564:SPTBN1 7554:SPTAN1 7389:Tektin 7282:DYNLT3 7277:DYNLT1 7262:DYNLL2 7257:DYNLL1 7204:DNALI1 7189:DNAH17 7184:DNAH14 7179:DNAH13 7174:DNAH12 7169:DNAH11 7164:DNAH10 7085:KIF26B 7080:KIF26A 7055:KIF21B 7050:KIF21A 7045:KIF20B 7040:KIF20A 7030:KIF18B 7025:KIF18A 7015:KIF16B 7000:KIF13B 6995:KIF13A 6794:TUBB4Q 6779:TUBB2C 6774:TUBB2B 6769:TUBB2A 6749:TUBA4A 6744:TUBA3E 6739:TUBA3D 6734:TUBA3C 6729:TUBA1C 6724:TUBA1B 6719:TUBA1A 6662:Type 5 6621:Nestin 6609:Type 4 6585:Desmin 6578:Type 3 6331:type I 6162:type I 6108:TRIOBP 5774:MYO18B 5769:MYO18A 5765:XVIII 5759:MYO15A 5494:Actins 5334:FAM20C 5105:type X 5098:COL8A2 5093:COL8A1 5082:COL7A1 5071:COL6A5 5066:COL6A3 5061:COL6A2 5056:COL6A1 4986:COL4A6 4981:COL4A5 4976:COL4A4 4971:COL4A3 4966:COL4A2 4961:COL4A1 4901:COL9A3 4896:COL9A2 4891:COL9A1 4854:COL5A3 4849:COL5A2 4844:COL5A1 4838:type V 4824:COL2A1 4811:COL1A2 4806:COL1A1 4800:type I 4775:matrix 4697:  4687:  4648:  4613:  4572:  4505:  4495:  4456:  4448:  4413:  4405:  4355:  4347:  4316:  4306:  4267:11 May 4216:  4208:  4155:  4096:  4086:  4036:  4028:  3973:  3965:  3901:  3891:  3849:  3839:  3800:  3765:  3755:  3706:  3651:  3616:  3543:  3535:  3447:  3176:cocoon 3173:hornet 3130:glands 3062:  3055:  3048:  3041:  3033:  2848:cornea 2702:rubber 2683:sulfur 2655:serine 2609:apolar 2480:KRT86 2472:KRT86 2464:KRT85 2456:KRT85 2448:KRT85 2440:KRT84 2432:KRT84 2424:KRT84 2416:KRT84 2408:KRT84 2400:KRT83 2392:KRT83 2384:KRT83 2376:KRT83 2371:aging 2368:KRT83 2360:KRT82 2352:KRT82 2344:KRT82 2336:KRT81 2328:KRT81 2320:KRT80 2312:KRT80 2232:KRT79 2224:KRT79 2216:KRT78 2208:KRT78 2200:KRT77 2192:KRT77 2184:KRT77 2176:KRT76 2168:KRT76 2160:KRT76 2152:KRT76 2144:KRT76 2136:KRT76 2128:KRT75 2120:KRT75 2112:KRT75 2104:KRT74 2096:KRT74 2088:KRT74 2080:KRT73 2072:KRT73 2064:KRT73 2056:KRT72 2048:KRT72 2040:KRT72 2032:KRT71 2024:KRT71 2016:KRT71 1992:KRT6C 1984:KRT6C 1976:KRT6C 1968:KRT6B 1960:KRT6B 1952:KRT6B 1944:KRT6A 1936:KRT6A 1928:KRT6A 1920:KRT6A 1912:KRT6A 1904:KRT6A 1896:KRT6A 1888:KRT6A 1880:KRT6A 1872:KRT6A 1864:KRT6A 1800:KRT40 1792:KRT40 1744:KRT39 1736:KRT39 1728:KRT38 1720:KRT38 1712:KRT37 1704:KRT37 1696:KRT36 1688:KRT36 1680:KRT36 1672:KRT36 1664:KRT35 1656:KRT35 1648:KRT35 1640:KRT34 1632:KRT34 1624:KRT34 1595:aging 1568:KRT32 1560:KRT32 1552:KRT32 1544:KRT31 1536:KRT31 1528:KRT31 1488:KRT28 1480:KRT27 1472:KRT27 1464:KRT27 1457:KRT26 1449:KRT25 1441:KRT25 1433:KRT25 1428:aging 1425:KRT25 1417:KRT25 1409:KRT24 1401:KRT23 1393:KRT23 1385:KRT20 1377:KRT20 1369:KRT20 1361:KRT20 1353:KRT20 1273:KRT19 1265:KRT19 1257:KRT19 1249:KRT19 1241:KRT19 1233:KRT19 1225:KRT18 1217:KRT18 1209:KRT18 1201:KRT18 1193:KRT18 1185:KRT18 1177:KRT18 1169:KRT18 1161:KRT18 1153:KRT18 1145:KRT17 1137:KRT17 1129:KRT17 1121:KRT17 1113:KRT17 1105:KRT17 1097:KRT17 1089:KRT17 1081:KRT16 1073:KRT16 1065:KRT16 1057:KRT16 1049:KRT16 1041:KRT16 1033:KRT16 1025:KRT16 1017:KRT16 1009:KRT16 1004:aging 1001:KRT16 993:KRT16 985:KRT16 977:KRT16 969:KRT15 961:KRT15 953:KRT15 945:KRT14 937:KRT14 929:KRT14 921:KRT14 913:KRT14 905:KRT14 897:KRT14 892:aging 889:KRT14 881:KRT13 873:KRT13 865:KRT13 857:KRT13 849:KRT12 841:KRT12 833:KRT12 825:KRT12 817:KRT12 809:KRT10 801:KRT10 793:KRT10 785:KRT10 777:KRT10 769:KRT10 761:KRT10 554:KRT33B 550:KRT33A 379:) are 346:turtle 334:shells 326:scales 303:thymus 299:thymic 271:whales 267:baleen 265:. The 259:hooves 220:impala 190:chitin 172:, and 170:rhinos 166:cattle 160:, and 126:hooves 102:scales 7639:Talin 7622:MACF1 7590:Other 7549:SPTA1 7414:TEKT5 7409:TEKT4 7404:TEKT3 7399:TEKT2 7394:TEKT1 7377:DCTN1 7360:Other 7214:DNAL4 7209:DNAL1 7199:DNAI2 7194:DNAI1 7159:DNAH9 7154:DNAH8 7149:DNAH7 7144:DNAH6 7139:DNAH5 7134:DNAH3 7129:DNAH2 7124:DNAH1 7105:KIFC3 7100:KIFC2 7095:KIFC1 7090:KIF27 7075:KIF25 7070:KIF24 7065:KIF23 7060:KIF22 7035:KIF19 7020:KIF17 7010:KIF15 7005:KIF14 6990:KIF12 6985:KIF11 6965:KIF5C 6960:KIF5B 6955:KIF5A 6950:KIF4B 6945:KIF4A 6940:KIF3C 6935:KIF3B 6930:KIF2C 6925:KIF2A 6920:KIF1B 6915:KIF1A 6887:MAP1B 6882:MAP1A 6849:TUBE1 6844:TUBD1 6814:TUBG2 6809:TUBG1 6804:TUBB8 6799:TUBB6 6789:TUBB4 6784:TUBB3 6764:TUBB1 6754:TUBA8 6103:Espin 6064:Other 6051:Titin 5857:Other 5846:MYLL1 5841:MYLK2 5831:MYLIP 5816:MYL6B 5749:MYO10 5739:MYO9B 5734:MYO9A 5724:MYO7B 5719:MYO7A 5699:MYO5C 5694:MYO5B 5689:MYO5A 5679:MYO3B 5674:MYO3A 5664:MYH16 5659:MYH15 5654:MYH14 5649:MYH13 5644:MYH11 5639:MYH10 5624:MYH7B 5583:MYO1H 5578:MYO1G 5573:MYO1F 5568:MYO1E 5563:MYO1D 5558:MYO1C 5553:MYO1B 5548:MYO1A 5463:Human 5374:Other 5359:TECTB 5354:TECTA 5324:FREM2 5319:FRAS1 5297:ALCAM 5290:Other 5279:LAMC3 5274:LAMC2 5269:LAMC1 5264:gamma 5257:LAMB4 5252:LAMB3 5247:LAMB2 5242:LAMB1 5230:LAMA5 5225:LAMA4 5220:LAMA3 5215:LAMA2 5210:LAMA1 5205:alpha 4882:FACIT 4875:Other 4454:S2CID 4411:S2CID 4353:S2CID 4214:S2CID 4166:(PDF) 4145:(PDF) 4034:S2CID 3971:S2CID 3541:S2CID 3169:nylon 3118:pupae 3067:JSTOR 3053:books 2748:ropes 2586:liver 2583:horse 2520:KRT9 2512:KRT9 2504:KRT9 2496:KRT9 2488:KRT9 2304:KRT8 2296:KRT8 2288:KRT8 2280:KRT8 2272:KRT8 2264:KRT8 2256:KRT8 2248:KRT8 2240:KRT8 2008:KRT7 2000:KRT7 1856:KRT5 1848:KRT5 1840:KRT5 1832:KRT5 1824:KRT5 1816:KRT5 1808:KRT5 1784:KRT4 1776:KRT4 1768:KRT4 1760:KRT4 1752:KRT4 1520:KRT3 1512:KRT3 1504:KRT3 1496:KRT3 1345:KRT2 1337:KRT2 1329:KRT2 1321:KRT2 1313:KRT2 1305:KRT2 1297:KRT2 1289:KRT2 1281:KRT2 753:KRT1 745:KRT1 737:KRT1 729:KRT1 721:KRT1 713:KRT1 705:KRT1 697:KRT1 689:KRT1 681:KRT1 673:KRT1 650:KRT86 646:KRT85 642:KRT84 638:KRT83 634:KRT82 630:KRT81 626:KRT80 618:KRT79 614:KRT78 610:KRT77 606:KRT76 602:KRT75 598:KRT74 594:KRT73 590:KRT72 586:KRT71 582:KRT40 578:KRT39 574:KRT38 570:KRT37 566:KRT36 562:KRT35 558:KRT34 546:KRT32 542:KRT31 538:KRT28 534:KRT27 530:KRT26 526:KRT25 522:KRT24 518:KRT23 507:genes 419:Genes 362:birds 358:beaks 322:birds 255:claws 251:nails 247:horns 216:horns 154:birds 122:claws 118:horns 110:nails 7723:ParM 7718:MreB 7713:FtsZ 7673:ACF7 7666:PKP2 7661:PKP1 7644:TLN1 7559:SPTB 7537:ANK3 7532:ANK2 7527:ANK1 7436:DNM3 7431:DNM2 7426:DNM1 7330:PCM1 6980:KIF9 6975:KIF7 6970:KIF6 6897:MAP4 6892:MAP2 6859:MAPs 6759:TUBB 6702:MAPs 6700:and 6641:NEFH 6636:NEFM 6631:NEFL 6590:GFAP 6238:none 6096:FLNC 6091:FLNB 6086:FLNA 5836:MYLK 5826:MYL9 5821:MYL7 5811:MYL6 5806:MYL5 5801:MYL4 5796:MYL3 5791:MYL2 5786:MYL1 5715:VII 5709:MYO6 5670:III 5634:MYH9 5629:MYH8 5619:MYH7 5614:MYH6 5609:MYH4 5604:MYH3 5599:MYH2 5594:MYH1 5476:ABPs 5474:and 5339:ECM1 5237:beta 4695:PMID 4646:PMID 4611:PMID 4570:PMID 4503:PMID 4446:PMID 4403:PMID 4345:PMID 4314:PMID 4269:2014 4206:PMID 4153:ISBN 4094:PMID 4026:PMID 4010:Cell 3963:PMID 3947:Cell 3899:PMID 3847:PMID 3798:PMID 3763:PMID 3704:ISBN 3649:PMID 3614:PMID 3575:2018 3533:PMID 3445:ISBN 3321:and 3279:Cats 3266:and 3214:and 3194:and 3186:Glue 3180:glue 3140:and 3109:and 3100:silk 3098:The 3039:news 2992:Silk 2648:Silk 2632:bone 2630:and 2624:skin 2550:and 648:and 622:KRT8 501:The 320:and 257:and 239:wool 235:hair 224:bone 214:The 168:and 130:skin 106:hair 7487:GAN 7470:APC 6877:EB3 6872:EB2 6867:EB1 6673:A/C 6356:33B 6351:33A 5755:XV 5730:IX 5705:VI 5590:II 4685:PMC 4677:doi 4673:119 4638:doi 4601:doi 4560:doi 4493:PMC 4485:doi 4438:doi 4395:doi 4337:doi 4304:PMC 4296:doi 4292:214 4196:doi 4084:PMC 4076:doi 4018:doi 3955:doi 3889:PMC 3881:doi 3877:174 3837:PMC 3829:doi 3825:129 3790:doi 3786:326 3753:PMC 3745:doi 3700:538 3641:doi 3606:doi 3525:doi 3481:doi 3416:in 3391:OED 3022:by 2716:or 403:). 34:or 7754:: 6683:B2 6678:B1 6671:: 6547:80 6542:79 6537:78 6532:77 6527:76 6522:75 6517:74 6512:73 6507:72 6502:71 6486:40 6481:39 6476:28 6471:27 6466:26 6461:25 6456:24 6451:23 6426:86 6421:85 6416:84 6411:83 6406:82 6401:81 6381:38 6376:37 6371:36 6366:35 6361:34 6346:32 6341:31 6298:6C 6293:6B 6288:6A 6268:2A 6243:21 6231:18 6217:20 6212:19 6207:17 6202:16 6197:15 6192:14 6187:13 6182:12 6177:10 5781:LC 5745:X 5685:V 5544:I 5527:G2 5522:G1 5517:C1 5507:A2 5502:A1 4997:: 4952:: 4884:: 4763:: 4693:. 4683:. 4671:. 4667:. 4644:. 4634:57 4632:. 4609:. 4597:14 4595:. 4591:. 4568:. 4556:15 4554:. 4550:. 4501:. 4491:. 4481:15 4479:. 4475:. 4452:. 4444:. 4434:38 4432:. 4409:. 4401:. 4391:43 4389:. 4351:. 4343:. 4312:. 4302:. 4290:. 4286:. 4212:. 4204:. 4192:42 4190:. 4186:. 4161:. 4147:. 4118:. 4114:. 4092:. 4082:. 4072:19 4070:. 4066:. 4040:. 4032:. 4024:. 4014:33 4012:. 4008:. 3994:^ 3977:. 3969:. 3961:. 3951:31 3949:. 3945:. 3919:. 3897:. 3887:. 3875:. 3871:. 3859:^ 3845:. 3835:. 3823:. 3819:. 3796:. 3784:. 3761:. 3751:. 3743:. 3733:87 3731:. 3727:. 3702:. 3669:. 3647:. 3635:. 3612:. 3604:. 3594:33 3592:. 3561:. 3539:. 3531:. 3521:95 3519:. 3515:. 3489:. 3477:76 3475:. 3471:. 3459:^ 3317:, 3313:, 3218:. 3210:, 3198:. 2934:, 2898:, 2879:, 2829:, 2820:, 2811:, 2669:. 2646:. 2626:, 2600:. 660:) 644:, 640:, 636:, 632:, 628:, 624:, 620:, 616:, 612:, 608:, 604:, 600:, 596:, 592:, 588:, 584:, 580:, 576:, 572:, 568:, 564:, 560:, 556:, 552:, 548:, 544:, 540:, 536:, 532:, 528:, 524:, 520:, 415:. 411:, 399:, 395:, 356:, 348:, 344:, 305:. 253:, 249:, 245:, 176:' 156:, 152:, 124:, 120:, 116:, 112:, 108:, 104:, 92:. 65:ɛr 6393:/ 6333:/ 6308:8 6303:7 6283:5 6278:4 6273:3 6263:1 6255:/ 6172:9 6164:/ 6143:) 6138:, 6134:( 6044:2 6039:1 6015:2 6010:1 5986:4 5981:3 5976:2 5971:1 5957:4 5952:3 5947:2 5942:1 5930:3 5927:2 5924:1 5921:I 5916:2 5913:1 5910:C 5905:3 5902:2 5899:1 5896:T 5884:4 5879:3 5874:2 5869:1 5585:) 5512:B 5444:e 5437:t 5430:v 5383:/ 5166:/ 5157:/ 5111:) 5107:( 5084:) 5080:( 4914:) 4910:( 4826:) 4822:( 4753:e 4746:t 4739:v 4701:. 4679:: 4652:. 4640:: 4617:. 4603:: 4576:. 4562:: 4535:. 4509:. 4487:: 4460:. 4440:: 4417:. 4397:: 4374:. 4359:. 4339:: 4320:. 4298:: 4271:. 4245:. 4220:. 4198:: 4129:. 4100:. 4078:: 4051:. 4020:: 3988:. 3957:: 3930:. 3905:. 3883:: 3853:. 3831:: 3804:. 3792:: 3769:. 3747:: 3739:: 3712:. 3679:. 3655:. 3643:: 3637:6 3620:. 3608:: 3600:: 3577:. 3547:. 3527:: 3500:. 3483:: 3453:. 3429:. 3089:) 3083:( 3078:) 3074:( 3064:· 3057:· 3050:· 3043:· 3016:. 2798:B 2792:A 2588:. 2537:. 476:) 470:( 465:) 461:( 391:( 336:( 226:. 80:/ 77:n 74:ɪ 71:t 68:ə 62:k 59:ˈ 56:/ 52:( 38:. 20:)

Index

Cornification
Carotene
Creatine

/ˈkɛrətɪn/
fibrous proteins
Alpha-keratin
vertebrates
scales
hair
nails
feathers
horns
claws
hooves
skin
epithelial
monomers
intermediate filaments
unmineralized
reptiles
birds
amphibians
mammals
cattle
rhinos
armadillos
osteoderm
biological
toughness

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