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Endocytosis

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receptor-mediated and fluid-phase endocytosis from the plasma membrane to early endosome and (ii) transport from the TGN to endosomes. In endocytosis, the clathrin coat is assembled on the cytoplasmic face of the plasma membrane, forming pits that invaginate to pinch off (scission) and become free CCVs. In cultured cells, the assembly of a CCV takes ~ 1min, and several hundred to a thousand or more can form every minute. The main scaffold component of clathrin coat is the 190-kD protein called clathrin heavy chain (CHC), which is associated with a 25- kD protein called clathrin light chain (CLC), forming three-legged trimers called triskelions.
215: 517:. The insertion of these hairpin-like α-helices forms a caveolae coat which leads to membrane curvature. In addition to insertion, caveolins are also capable of oligomerization which further plays a role in membrane curvature. Recent studies have also discovered that polymerase I, transcript release factor, and serum deprivation protein response also play a role in the assembly of caveolae. Besides caveolae assembly, researchers have also discovered that CAV1 proteins can also influence other endocytic pathways. When CAV1 binds to 239:, which usually occurs from highly ruffled regions of the plasma membrane, is the invagination of the cell membrane to form a pocket, which then pinches off into the cell to form a vesicle (0.5–5 μm in diameter) filled with a large volume of extracellular fluid and molecules within it (equivalent to ~100 CCVs). The filling of the pocket occurs in a non-specific manner. The vesicle then travels into the 31: 581: 569: 557: 529:
The process of cell uptake depends on the tilt and chirality of constituent molecules to induce membrane budding. Since such chiral and tilted lipid molecules are likely to be in a "raft" form, researchers suggest that caveolae formation also follows this mechanism since caveolae are also enriched in
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At any one moment, about 25% of the plasma membrane of a fibroblast is made up of coated pits. As a coated pit has a life of about a minute before it buds into the cell, a fibroblast takes up its surface by this route about once every 50 minutes. Coated vesicles formed from the plasma membrane have a
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Coats function to deform the donor membrane to produce a vesicle, and they also function in the selection of the vesicle cargo. Coat complexes that have been well characterized so far include coat protein-I (COP-I), COP-II, and clathrin. Clathrin coats are involved in two crucial transport steps: (i)
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are the last compartment of the endocytic pathway. Their chief function is to break down cellular waste products, fats, carbohydrates, proteins, and other macromolecules into simple compounds. These are then returned to the cytoplasm as new cell-building materials. To accomplish this, lysosomes use
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before arriving at the cell surface to aid in caveolar formation. Caveolae formation is also reversible through disassembly under certain conditions such as increased plasma membrane tension. These certain conditions then depend on the type of tissues that are expressing the caveolar function. For
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are the first compartment of the endocytic pathway. Early endosomes are often located in the periphery of the cell, and receive most types of vesicles coming from the cell surface. They have a characteristic tubulo-vesicular structure (vesicles up to 1 μm in diameter with connected tubules of
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Study in mammalian cells confirm a reduction in clathrin coat size in an increased tension environment. In addition, it suggests that the two apparently distinct clathrin assembly modes, namely coated pits and coated plaques, observed in experimental investigations might be a consequence of varied
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in the acid pH of the compartment, and from which many of the receptors recycle to the cell surface (via tubules). It is also the site of sorting into transcytotic pathway to later compartments (like late endosomes or lysosomes) via transvesicular compartments (like multivesicular bodies (MVB) or
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The endocytic pathway of mammalian cells consists of distinct membrane compartments, which internalize molecules from the plasma membrane and recycle them back to the surface (as in early endosomes and recycling endosomes), or sort them to degradation (as in late endosomes and lysosomes). The
534:, the membrane starts to bend, leading to spontaneous curvature. This effect is due to the force distribution generated when the caveolin oligomer binds to the membrane. The force distribution then alters the tension of the membrane which leads to budding and eventually vesicle formation. 228:
is a form of receptor-mediated endocytosis that uses caveolae vesicles to bring molecules of various sizes into the cell. Unlike most endocytosis that uses caveolae to deliver contents of vesicles to lysosomes or other organelles, material endocytosed via potocytosis is released into the
192:. Caveolae are small (approx. 50 nm in diameter) flask-shape pits in the membrane that resemble the shape of a cave (hence the name caveolae). They can constitute up to a third of the plasma membrane area of the cells of some tissues, being especially abundant in 389:(1-2 μm in diameter) containing electron dense material. They have a high content of lysosomal membrane proteins and active lysosomal hydrolases, but no mannose-6-phosphate receptor. They are generally regarded as the principal hydrolytic compartment of the cell. 363:
in the phagocytic pathway. Late endosomes often contain proteins characteristic of nucleosomes, mitochondria and mRNAs including lysosomal membrane glycoproteins and acid hydrolases. They are acidic (approx. pH 5.5), and are part of the trafficking pathway of
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of the cell. This pit then buds into the cell to form a coated vesicle in the cytoplasm of the cell. In so doing, it brings into the cell not only a small area of the surface of the cell but also a small volume of fluid from outside the cell.
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More recent experiments have suggested that these morphological descriptions of endocytic events may be inadequate, and a more appropriate method of classification may be based upon whether particular pathways are dependent on clathrin and
513:. Though there are many morphological features conserved among caveolae, the functions of each CAV protein are diverse. One common feature among caveolins is their hydrophobic stretches of potential hairpin structures that are made of 93: 614: 593: 449:
and proceeds down the endocytic pathway. The actual budding-in process, whereby a pit is converted to a vesicle, is carried out by clathrin; Assisted by a set of cytoplasmic proteins, which includes
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Falcone S, Cocucci E, Podini P, Kirchhausen T, Clementi E, Meldolesi J (November 2006). "Macropinocytosis: regulated coordination of endocytic and exocytic membrane traffic events".
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are multisubunit complexes that perform this function at the plasma membrane. The best-understood receptors that are found concentrated in coated vesicles of mammalian cells are the
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are the most commonly reported non-clathrin-coated plasma membrane buds, which exist on the surface of many, but not all cell types. They consist of the cholesterol-binding protein
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Anderson RG, Brown MS, Goldstein JL (March 1977). "Role of the coated endocytic vesicle in the uptake of receptor-bound low density lipoprotein in human fibroblasts".
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is the process by which cells bind and internalize particulate matter larger than around 0.75 μm in diameter, such as small-sized dust particles, cell debris,
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approx. 50 nm diameter) and a mildly acidic pH. They are principally sorting organelles where many endocytosed ligands dissociate from their
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is mediated by the production of small (approx. 100 nm in diameter) vesicles that have a morphologically characteristic coat made up of the
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diameter of about 100 nm and a lifetime measured in a few seconds. Once the coat has been shed, the remaining vesicle fuses with
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Vesicles selectively concentrate and exclude certain proteins during formation and are not representative of the membrane as a whole.
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Walther TC, Brickner JH, Aguilar PS, Bernales S, Pantoja C, Walter P (February 2006). "Eisosomes mark static sites of endocytosis".
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Stoorvogel W, Strous GJ, Geuze HJ, Oorschot V, Schwartz AL (May 1991). "Late endosomes derive from early endosomes by maturation".
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some 40 different types of hydrolytic enzymes, all of which are manufactured in the endoplasmic reticulum, modified in the
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receptors. Late endosomes are thought to mediate a final set of sorting events prior the delivery of material to lysosomes.
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McMahon HT, Boucrot E (July 2011). "Molecular mechanism and physiological functions of clathrin-mediated endocytosis".
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Coated pits and vesicles were first seen in thin sections of tissue in the electron microscope by Thomas F Roth and
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Gaidarov I, Santini F, Warren RA, Keen JH (May 1999). "Spatial control of coated-pit dynamics in living cells".
2245: 141: 438: 430: 345: 149: 145: 292: 212:. Uptake of extracellular molecules is also believed to be specifically mediated via receptors in caveolae. 1596:"Clathrin-mediated endocytosis: the physiological mechanism of vesicle retrieval at hippocampal synapses" 405:
The major route for endocytosis in most cells, and the best-understood, is that mediated by the molecule
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Schematic drawing illustrating clathrin-mediated (left) and clathrin-independent endocytosis (right) of
2024: 1867: 1366: 867: 464:. The importance of them for the clearance of LDL from blood was discovered by Richard G. Anderson, 2171: 510: 469: 382: 365: 101: 82: 2013:"Chirality-induced budding: a raft-mediated mechanism for endocytosis and morphology of caveolae?" 1856:"Clathrin: a unique protein associated with intracellular transfer of membrane by coated vesicles" 2191: 2161: 1944: 1836: 1744: 1576: 1533: 1390: 1228: 1014: 936: 801: 46: 2179: 2090: 2050: 1993: 1936: 1895: 1828: 1793: 1736: 1701: 1660: 1625: 1568: 1525: 1490: 1439: 1382: 1339: 1298: 1263: 1220: 1185: 1150: 1115: 1084:
Lundmark R, Doherty GJ, Howes MT, Cortese K, Vallis Y, Parton RG, McMahon HT (November 2008).
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Dynamin-independent clathrin-independent pathways include the CLIC/GEEC pathway (regulated by
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Gruenberg J, Maxfield FR (August 1995). "Membrane transport in the endocytic pathway".
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example, not all tissues that have caveolar proteins have a caveolar structure ie. the
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are brought into the cell. The material to be internalized is surrounded by an area of
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and function in an acidic environment. The approximate pH of a lysosome is 4.8 and by
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from circulating blood), the transferrin receptor (which brings ferric ions bound by
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Benmerah A, Lamaze C (August 2007). "Clathrin-coated pits: vive la différence?".
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Proceedings of the National Academy of Sciences of the United States of America
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From left to right: Phagocytosis, Pinocytosis, Receptor-mediated endocytosis.
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Mineo C, Anderson RG (August 2001). "Potocytosis. Robert Feulgen Lecture".
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Luzio JP, Rous BA, Bright NA, Pryor PR, Mullock BM, Piper RC (May 2000).
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raft constituents. When caveolin proteins bind to the inner leaflet via
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cells. These processes involve the uptake of larger membrane areas than
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Rappoport JZ (June 2008). "Focusing on clathrin-mediated endocytosis".
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Marsh M, McMahon HT (July 1999). "The structural era of endocytosis".
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Endocytosis pathways can be subdivided into four categories: namely,
1764:"Yolk Protein Uptake In The Oocyte Of The Mosquito Aedes Aegypti. L" 924: 911:
Parton RG, Simons K (March 2007). "The multiple faces of caveolae".
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Irajizad E, Walani N, Veatch SL, Liu AP, Agrawal A (February 2017).
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responsible for the receptor-mediated endocytosis of ligands, e.g.
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Endocytosis - researching endocytic mechanisms at endocytosis.org
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Mukherjee S, Ghosh RN, Maxfield FR (July 1997). "Endocytosis".
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into the cell) and certain hormone receptors (such as that for
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Granseth B, Odermatt B, Royle SJ, Lagnado L (December 2007).
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Doherty GJ, McMahon HT (2009). "Mechanisms of endocytosis".
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is the only pathway dependent on both clathrin and dynamin.
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Dynamin-dependent clathrin-independent pathways include
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containing the ingested materials. Endocytosis includes
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Robinson MS (March 1997). "Coats and vesicle budding".
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Mellman I (1996). "Endocytosis and molecular sorting".
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Bitsikas V, Corrêa IR, Nichols BJ (September 2014).
2316: 2268: 2259: 2221: 2178: 333:principal components of the endocytic pathway are: 1318:"Lysosome-endosome fusion and lysosome biogenesis" 65:(cell eating). It is a form of active transport. 472:in 1977. Coated vesicles were first purified by 53:, which then buds off inside the cell to form a 1408:Kirchhausen T, Owen D, Harrison SC (May 2014). 1135:Annual Review of Cell and Developmental Biology 111:(also known as clathrin-mediated endocytosis), 1913:Parton RG, Tillu VA, Collins BM (April 2018). 2146: 695:Glossary of Genetics: Classical and Molecular 8: 397:serves as a portal of endocytosis in yeast. 1680:"The curious status of the Golgi apparatus" 698:(Fifth ed.). Berlin: Springer-Verlag. 504:. Then, these oligomers travel through the 2265: 2170:Mechanisms for chemical transport through 2153: 2139: 2131: 1414:Cold Spring Harbor Perspectives in Biology 2044: 1987: 1930: 1889: 1879: 1787: 1695: 1619: 1484: 1474: 1433: 1333: 1246:Weissmann G (November 1965). 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For example, coronavirus 243:and fuses with other vesicles such as 1030: 1028: 7: 2283:Non-specific, adsorptive pinocytosis 1762:ROTH TF, PORTER KR (February 1964). 1035:Casamento A, Boucrot E (June 2020). 2110:Endocytosis at biologyreference.com 1248:The New England Journal of Medicine 500:where it forms detergent-resistant 484:Caveolin proteins like caveolin-1 ( 349:endosomal carrier vesicles (ECVs)). 184:(Vip21) with a bilayer enriched in 547:binds to the ACE2 receptor of the 34:The different types of endocytosis 25: 2126:Types of Endocytosis (Animation) 1522:10.1111/j.1600-0854.2007.00585.x 1147:10.1146/annurev.cellbio.12.1.575 612: 591: 579: 567: 555: 170:tensions in the plasma membrane. 1283:Current Opinion in Cell Biology 956:Histochemistry and Cell Biology 730:from the original on 2016-10-10 720:"Ilya Mechnikov - Biographical" 2122:ASCB Image & Video Library 393:It was recently found that an 1: 2303:Receptor-mediated endocytosis 2120:Clathrin-mediated endocytosis 2075:Annual Review of Biochemistry 1697:10.1016/S0092-8674(00)81713-4 1657:10.1016/S0962-8924(96)10048-9 1182:10.1152/physrev.1997.77.3.759 385:(EM) usually appear as large 322:Clathrin-mediated endocytosis 269:clathrin-mediated endocytosis 129:Clathrin-mediated endocytosis 109:receptor-mediated endocytosis 1825:10.1016/0092-8674(77)90022-8 1612:10.1113/jphysiol.2007.139022 1295:10.1016/0955-0674(95)80013-1 1217:10.1016/0092-8674(91)90459-C 833:10.1126/science.285.5425.215 2037:10.1529/biophysj.106.085662 1426:10.1101/cshperspect.a016725 1260:10.1056/NEJM196511112732006 653:(Rab5-activating protein 6) 2373: 2251:Secondary active transport 2168: 1932:10.1016/j.cub.2017.11.075 1600:The Journal of Physiology 1102:10.1016/j.cub.2008.10.044 628:Endocytosis animation (2) 607:Endocytosis animation (1) 73:The term was proposed by 2246:Primary active transport 1854:Pearse BM (April 1976). 480:Processes and components 142:Clathrin-coated vesicles 1553:The Biochemical Journal 1322:Journal of Cell Science 1041:The Biochemical Journal 991:Journal of Cell Science 150:low density lipoprotein 1881:10.1073/pnas.73.4.1255 1645:Trends in Cell Biology 1335:10.1242/jcs.113.9.1515 219: 104: 35: 2198:Facilitated diffusion 1254:(20): 1084–90 contd. 1170:Physiological Reviews 968:10.1007/s004180100289 453:and adaptors such as 217: 96: 33: 2172:biological membranes 1780:10.1083/jcb.20.2.313 997:(Pt 22): 4758–4769. 328:Principal components 61:(cell drinking) and 2029:2007BpJ....92.3140S 2017:Biophysical Journal 1872:1976PNAS...73.1255P 1721:Nature Cell Biology 1476:10.7554/eLife.03970 1379:10.1038/nature04472 1371:2006Natur.439..998W 1053:10.1042/bcj20190342 872:2017SMat...13.1455I 511:blood-brain barrier 492:), and caveolin-3 ( 470:Joseph L. Goldstein 383:electron microscopy 366:mannose-6-phosphate 2347:Cellular processes 2192:mediated transport 2162:Membrane transport 1980:10.1038/cr.2010.19 1565:10.1042/BJ20080474 1365:(7079): 998–1003. 880:10.1039/C6SM02623K 724:www.nobelprize.org 303:and IL2Rβ uptake. 220: 105: 81:was discovered by 36: 2334: 2333: 2330: 2329: 2180:Passive transport 1606:(Pt 3): 681–686. 1096:(22): 1802–1808. 1047:(12): 2327–2345. 1003:10.1242/jcs.03238 827:(5425): 215–220. 762:978-0-19-963851-2 705:978-3-642-75333-6 672:Trans-endocytosis 623: 602: 401:Clathrin-mediated 210:endothelial cells 16:(Redirected from 2364: 2352:Membrane biology 2266: 2223:Active transport 2188:Simple diffusion 2155: 2148: 2141: 2132: 2098: 2059: 2058: 2048: 2008: 2002: 2001: 1991: 1959: 1953: 1952: 1934: 1925:(8): R402–R405. 1910: 1904: 1903: 1893: 1883: 1866:(4): 1255–1259. 1851: 1845: 1844: 1808: 1802: 1801: 1791: 1759: 1753: 1752: 1716: 1710: 1709: 1699: 1675: 1669: 1668: 1640: 1634: 1633: 1623: 1591: 1585: 1584: 1548: 1542: 1541: 1505: 1499: 1498: 1488: 1478: 1454: 1448: 1447: 1437: 1405: 1399: 1398: 1354: 1348: 1347: 1337: 1328:(9): 1515–1524. 1313: 1307: 1306: 1278: 1272: 1271: 1243: 1237: 1236: 1200: 1194: 1193: 1165: 1159: 1158: 1130: 1124: 1123: 1113: 1081: 1075: 1074: 1064: 1032: 1023: 1022: 986: 980: 979: 951: 945: 944: 908: 902: 901: 891: 866:(7): 1455–1462. 851: 845: 844: 816: 810: 809: 773: 767: 766: 751:Marsh M (2001). 748: 739: 738: 736: 735: 716: 710: 709: 689: 641:Active transport 625: 624: 604: 603: 583: 571: 559: 466:Michael S. Brown 316:macropinocytosis 164:and many others. 99:synaptic vesicle 83:Élie Metchnikoff 43:cellular process 27:Cellular process 21: 2372: 2371: 2367: 2366: 2365: 2363: 2362: 2361: 2337: 2336: 2335: 2326: 2312: 2255: 2217: 2174: 2164: 2159: 2106: 2101: 2072: 2068: 2066:Further reading 2063: 2062: 2010: 2009: 2005: 1961: 1960: 1956: 1919:Current Biology 1912: 1911: 1907: 1853: 1852: 1848: 1810: 1809: 1805: 1761: 1760: 1756: 1718: 1717: 1713: 1677: 1676: 1672: 1642: 1641: 1637: 1593: 1592: 1588: 1550: 1549: 1545: 1507: 1506: 1502: 1456: 1455: 1451: 1407: 1406: 1402: 1356: 1355: 1351: 1315: 1314: 1310: 1280: 1279: 1275: 1245: 1244: 1240: 1202: 1201: 1197: 1167: 1166: 1162: 1132: 1131: 1127: 1090:Current Biology 1083: 1082: 1078: 1034: 1033: 1026: 988: 987: 983: 953: 952: 948: 925:10.1038/nrm2122 910: 909: 905: 853: 852: 848: 818: 817: 813: 790:10.1038/nrm3151 775: 774: 770: 763: 750: 749: 742: 733: 731: 718: 717: 713: 706: 691: 690: 686: 681: 676: 636: 629: 626: 613: 608: 605: 592: 587: 584: 575: 572: 563: 560: 549:epithelial cell 540: 527: 488:), caveolin-2 ( 482: 462:Keith R. Porter 429:(which removes 411:plasma membrane 403: 379:Golgi apparatus 330: 91: 71: 28: 23: 22: 18:Endocytic cycle 15: 12: 11: 5: 2370: 2368: 2360: 2359: 2354: 2349: 2339: 2338: 2332: 2331: 2328: 2327: 2322: 2320: 2314: 2313: 2311: 2310: 2305: 2300: 2295: 2290: 2285: 2280: 2274: 2272: 2263: 2257: 2256: 2254: 2253: 2248: 2243: 2238: 2233: 2227: 2225: 2219: 2218: 2216: 2215: 2210: 2205: 2200: 2195: 2184: 2182: 2176: 2175: 2169: 2166: 2165: 2160: 2158: 2157: 2150: 2143: 2135: 2129: 2128: 2123: 2117: 2112: 2105: 2104:External links 2102: 2100: 2099: 2069: 2067: 2064: 2061: 2060: 2023:(9): 3140–58. 2003: 1954: 1905: 1846: 1819:(3): 351–364. 1803: 1754: 1711: 1690:(7): 883–889. 1670: 1635: 1586: 1559:(3): 415–423. 1543: 1516:(8): 970–982. 1500: 1449: 1420:(5): a016725. 1400: 1349: 1308: 1289:(4): 552–563. 1273: 1238: 1211:(3): 417–427. 1195: 1176:(3): 759–803. 1160: 1125: 1076: 1024: 981: 962:(2): 109–118. 946: 919:(3): 185–194. 903: 846: 811: 768: 761: 740: 711: 704: 683: 682: 680: 677: 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2056: 2052: 2047: 2042: 2038: 2034: 2030: 2026: 2022: 2018: 2014: 2007: 2004: 1999: 1995: 1990: 1985: 1981: 1977: 1974:(3): 256–75. 1973: 1969: 1968:Cell Research 1965: 1958: 1955: 1950: 1946: 1942: 1938: 1933: 1928: 1924: 1920: 1916: 1909: 1906: 1901: 1897: 1892: 1887: 1882: 1877: 1873: 1869: 1865: 1861: 1857: 1850: 1847: 1842: 1838: 1834: 1830: 1826: 1822: 1818: 1814: 1807: 1804: 1799: 1795: 1790: 1785: 1781: 1777: 1774:(2): 313–32. 1773: 1769: 1765: 1758: 1755: 1750: 1746: 1742: 1738: 1734: 1730: 1726: 1722: 1715: 1712: 1707: 1703: 1698: 1693: 1689: 1685: 1681: 1674: 1671: 1666: 1662: 1658: 1654: 1651:(3): 99–102. 1650: 1646: 1639: 1636: 1631: 1627: 1622: 1617: 1613: 1609: 1605: 1601: 1597: 1590: 1587: 1582: 1578: 1574: 1570: 1566: 1562: 1558: 1554: 1547: 1544: 1539: 1535: 1531: 1527: 1523: 1519: 1515: 1511: 1504: 1501: 1496: 1492: 1487: 1482: 1477: 1472: 1468: 1464: 1460: 1453: 1450: 1445: 1441: 1436: 1431: 1427: 1423: 1419: 1415: 1411: 1404: 1401: 1396: 1392: 1388: 1384: 1380: 1376: 1372: 1368: 1364: 1360: 1353: 1350: 1345: 1341: 1336: 1331: 1327: 1323: 1319: 1312: 1309: 1304: 1300: 1296: 1292: 1288: 1284: 1277: 1274: 1269: 1265: 1261: 1257: 1253: 1249: 1242: 1239: 1234: 1230: 1226: 1222: 1218: 1214: 1210: 1206: 1199: 1196: 1191: 1187: 1183: 1179: 1175: 1171: 1164: 1161: 1156: 1152: 1148: 1144: 1140: 1136: 1129: 1126: 1121: 1117: 1112: 1107: 1103: 1099: 1095: 1091: 1087: 1080: 1077: 1072: 1068: 1063: 1058: 1054: 1050: 1046: 1042: 1038: 1031: 1029: 1025: 1020: 1016: 1012: 1008: 1004: 1000: 996: 992: 985: 982: 977: 973: 969: 965: 961: 957: 950: 947: 942: 938: 934: 930: 926: 922: 918: 914: 907: 904: 899: 895: 890: 885: 881: 877: 873: 869: 865: 861: 857: 850: 847: 842: 838: 834: 830: 826: 822: 815: 812: 807: 803: 799: 795: 791: 787: 784:(8): 517–33. 783: 779: 772: 769: 764: 758: 754: 747: 745: 741: 729: 725: 721: 715: 712: 707: 701: 697: 696: 688: 685: 678: 673: 670: 668: 665: 663: 660: 658: 655: 652: 649: 647: 646:Emperipolesis 644: 642: 639: 638: 633: 610: 589: 582: 577: 570: 565: 558: 553: 550: 546: 542: 537: 535: 533: 524: 522: 520: 516: 512: 507: 506:Golgi complex 503: 499: 495: 491: 487: 479: 477: 475: 471: 467: 463: 458: 456: 452: 448: 442: 440: 436: 432: 428: 424: 419: 415: 412: 408: 400: 398: 396: 388: 384: 380: 375: 374: 370: 367: 362: 358: 354: 351: 347: 342: 341: 336: 335: 334: 327: 325: 323: 319: 317: 313: 309: 304: 302: 298: 294: 290: 285: 283: 274: 270: 266: 262: 258: 257: 253: 250: 246: 242: 238: 237: 233: 227: 226: 222: 221: 216: 211: 207: 203: 199: 195: 194:smooth muscle 191: 187: 183: 179: 178: 174: 173: 168: 167: 163: 159: 155: 151: 147: 143: 139: 135: 131: 130: 126: 125: 124: 122: 118: 114: 110: 103: 100: 95: 88: 86: 84: 80: 76: 68: 66: 64: 60: 56: 52: 51:cell membrane 48: 44: 40: 32: 19: 2357:Cell anatomy 2308:Transcytosis 2288:Phagocytosis 2269: 2078: 2074: 2020: 2016: 2006: 1971: 1967: 1957: 1922: 1918: 1908: 1863: 1859: 1849: 1816: 1812: 1806: 1771: 1767: 1757: 1733:10.1038/8971 1724: 1720: 1714: 1687: 1683: 1673: 1648: 1644: 1638: 1603: 1599: 1589: 1556: 1552: 1546: 1513: 1509: 1503: 1466: 1462: 1452: 1417: 1413: 1403: 1362: 1358: 1352: 1325: 1321: 1311: 1286: 1282: 1276: 1251: 1247: 1241: 1208: 1204: 1198: 1173: 1169: 1163: 1138: 1134: 1128: 1093: 1089: 1079: 1044: 1040: 994: 990: 984: 959: 955: 949: 916: 912: 906: 863: 859: 849: 824: 820: 814: 781: 777: 771: 752: 732:. Retrieved 723: 714: 694: 687: 662:Phagocytosis 528: 483: 459: 443: 427:LDL receptor 423:AP2 adaptors 420: 416: 404: 392: 371: 352: 337: 331: 320: 305: 286: 278: 256:Phagocytosis 254: 234: 223: 175: 127: 121:phagocytosis 106: 79:Phagocytosis 72: 63:phagocytosis 38: 37: 2298:Potocytosis 2293:Pinocytosis 2270:Endocytosis 2081:: 857–902. 1768:J Cell Biol 1141:: 575–625. 860:Soft Matter 753:Endocytosis 667:Pinocytosis 532:cholesterol 435:transferrin 236:Pinocytosis 225:Potocytosis 202:fibroblasts 198:pneumocytes 190:glycolipids 186:cholesterol 154:transferrin 117:pinocytosis 59:pinocytosis 39:Endocytosis 2341:Categories 2318:Exocytosis 2241:Antiporter 1915:"Caveolae" 1727:(1): 1–7. 1469:: e03970. 734:2016-10-10 679:References 657:Exocytosis 545:SARS-CoV-2 525:Mechanisms 361:phagosomes 206:adipocytes 162:antibodies 47:substances 2236:Symporter 2231:Uniporter 1949:235331463 515:α-helices 502:oligomers 447:endosomes 373:Lysosomes 357:lysosomes 346:receptors 340:endosomes 265:apoptotic 249:lysosomes 245:endosomes 196:, type I 146:receptors 134:cytosolic 102:membranes 85:in 1882. 77:in 1963. 45:in which 2213:Carriers 2208:Channels 2190:(or non- 2095:19317650 2055:17237196 1998:20125123 1941:29689223 1841:25657719 1798:14126875 1749:12553151 1741:10559856 1665:17708916 1630:17599959 1581:24174632 1573:18498251 1538:12685926 1530:17547704 1495:25232658 1444:24789820 1387:16496001 1344:10751143 1233:31539542 1120:19036340 1071:32589750 1019:14303429 1011:17077125 976:11685539 941:10830810 933:17318224 898:28124714 841:10398591 806:15235357 798:21779028 728:Archived 634:See also 407:clathrin 395:eisosome 387:vacuoles 301:EGFR-NCE 275:pathway. 273:caveolae 229:cytosol. 182:caveolin 177:Caveolae 138:clathrin 136:protein 113:caveolae 89:Pathways 2261:Cytosis 2203:Osmosis 2046:1852369 2025:Bibcode 1989:7091825 1900:1063406 1868:Bibcode 1789:2106398 1706:9875843 1621:2375507 1510:Traffic 1486:4185422 1435:3996469 1395:2838121 1367:Bibcode 1303:7495576 1268:5319614 1225:1850321 1190:9234965 1155:8970738 1111:2726289 1062:7319585 889:5452080 868:Bibcode 821:Science 586:Stage 3 574:Stage 2 562:Stage 1 538:Gallery 455:adaptin 451:dynamin 282:dynamin 241:cytosol 75:De Duve 69:History 55:vesicle 2093:  2053:  2043:  1996:  1986:  1947:  1939:  1898:  1891:430241 1888:  1839:  1833:191195 1831:  1796:  1786:  1747:  1739:  1704:  1663:  1628:  1618:  1579:  1571:  1536:  1528:  1493:  1483:  1442:  1432:  1393:  1385:  1359:Nature 1342:  1301:  1266:  1231:  1223:  1188:  1153:  1118:  1108:  1069:  1059:  1017:  1009:  974:  939:  931:  896:  886:  839:  804:  796:  759:  702:  338:Early 208:, and 119:, and 1945:S2CID 1837:S2CID 1745:S2CID 1577:S2CID 1534:S2CID 1463:eLife 1391:S2CID 1229:S2CID 1015:S2CID 937:S2CID 802:S2CID 519:Cdc42 308:Graf1 41:is a 2091:PMID 2051:PMID 1994:PMID 1937:PMID 1896:PMID 1829:PMID 1813:Cell 1794:PMID 1737:PMID 1702:PMID 1684:Cell 1661:PMID 1626:PMID 1569:PMID 1526:PMID 1491:PMID 1440:PMID 1383:PMID 1340:PMID 1299:PMID 1264:PMID 1221:PMID 1205:Cell 1186:PMID 1151:PMID 1116:PMID 1067:PMID 1007:PMID 972:PMID 929:PMID 894:PMID 837:PMID 794:PMID 757:ISBN 700:ISBN 651:RAP6 494:CAV3 490:CAV2 486:CAV1 468:and 314:and 312:MEND 297:ADBE 289:FEME 271:and 263:and 247:and 188:and 2083:doi 2041:PMC 2033:doi 1984:PMC 1976:doi 1927:doi 1886:PMC 1876:doi 1821:doi 1784:PMC 1776:doi 1729:doi 1692:doi 1653:doi 1616:PMC 1608:doi 1604:585 1561:doi 1557:412 1518:doi 1481:PMC 1471:doi 1430:PMC 1422:doi 1375:doi 1363:439 1330:doi 1326:113 1291:doi 1256:doi 1252:273 1213:doi 1178:doi 1143:doi 1106:PMC 1098:doi 1057:PMC 1049:doi 1045:477 999:doi 995:119 964:doi 960:116 921:doi 884:PMC 876:doi 829:doi 825:285 786:doi 441:). 439:EGF 431:LDL 293:UFE 2343:: 2089:. 2079:78 2077:. 2049:. 2039:. 2031:. 2021:92 2019:. 2015:. 1992:. 1982:. 1972:20 1970:. 1966:. 1943:. 1935:. 1923:28 1921:. 1917:. 1894:. 1884:. 1874:. 1864:73 1862:. 1858:. 1835:. 1827:. 1817:10 1815:. 1792:. 1782:. 1772:20 1770:. 1766:. 1743:. 1735:. 1723:. 1700:. 1688:95 1686:. 1682:. 1659:. 1647:. 1624:. 1614:. 1602:. 1598:. 1575:. 1567:. 1555:. 1532:. 1524:. 1512:. 1489:. 1479:. 1465:. 1461:. 1438:. 1428:. 1416:. 1412:. 1389:. 1381:. 1373:. 1361:. 1338:. 1324:. 1320:. 1297:. 1285:. 1262:. 1250:. 1227:. 1219:. 1209:65 1207:. 1184:. 1174:77 1172:. 1149:. 1139:12 1137:. 1114:. 1104:. 1094:18 1092:. 1088:. 1065:. 1055:. 1043:. 1039:. 1027:^ 1013:. 1005:. 993:. 970:. 958:. 935:. 927:. 915:. 892:. 882:. 874:. 864:13 862:. 858:. 835:. 823:. 800:. 792:. 782:12 780:. 743:^ 726:. 722:. 498:ER 457:. 318:. 299:, 295:, 291:, 284:. 204:, 200:, 160:, 156:, 152:, 140:. 123:. 115:, 2194:) 2154:e 2147:t 2140:v 2097:. 2085:: 2057:. 2035:: 2027:: 2000:. 1978:: 1951:. 1929:: 1902:. 1878:: 1870:: 1843:. 1823:: 1800:. 1778:: 1751:. 1731:: 1725:1 1708:. 1694:: 1667:. 1655:: 1649:7 1632:. 1610:: 1583:. 1563:: 1540:. 1520:: 1514:8 1497:. 1473:: 1467:3 1446:. 1424:: 1418:6 1397:. 1377:: 1369:: 1346:. 1332:: 1305:. 1293:: 1287:7 1270:. 1258:: 1235:. 1215:: 1192:. 1180:: 1157:. 1145:: 1122:. 1100:: 1073:. 1051:: 1021:. 1001:: 978:. 966:: 943:. 923:: 917:8 900:. 878:: 870:: 843:. 831:: 808:. 788:: 765:. 737:. 708:. 551:. 251:. 20:)

Index

Endocytic cycle

cellular process
substances
cell membrane
vesicle
pinocytosis
phagocytosis
De Duve
Phagocytosis
Élie Metchnikoff

synaptic vesicle
membranes
receptor-mediated endocytosis
caveolae
pinocytosis
phagocytosis
Clathrin-mediated endocytosis
cytosolic
clathrin
Clathrin-coated vesicles
receptors
low density lipoprotein
transferrin
growth factors
antibodies
Caveolae
caveolin
cholesterol

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