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Ligand (biochemistry)

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555:. Many believe this limits their applicability in clinical settings. In spite of these beliefs, there have been many ligands that have reported successful pre-clinical animal studies. Given that some bivalent ligands can have many advantages compared to their monovalent counterparts (such as tissue selectivity, increased binding affinity, and increased potency or efficacy), bivalents may offer some clinical advantages as well. 42: 388: 295: 317:, the concentration required to produce the half-maximal response). High-affinity ligand binding implies that a relatively low concentration of a ligand is adequate to maximally occupy a ligand-binding site and trigger a physiological response. Receptor affinity is measured by an inhibition constant or K 1247:
Matera, Carlo; Flammini, Lisa; Quadri, Marta; Vivo, Valentina; Ballabeni, Vigilio; Holzgrabe, Ulrike; Mohr, Klaus; De Amici, Marco; Barocelli, Elisabetta (2014-03-21). "Bis(ammonio)alkane-type agonists of muscarinic acetylcholine receptors: Synthesis, in vitro functional characterization, and in vivo
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Ligands of proteins can be characterized also by the number of protein chains they bind. "Monodesmic" ligands (μόνος: single, δεσμός: binding) are ligands that bind a single protein chain, while "polydesmic" ligands (πολοί: many) are frequent in protein complexes, and are ligands that bind more than
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level) implies that a relatively high concentration of a ligand is required before the binding site is maximally occupied and the maximum physiological response to the ligand is achieved. In the example shown to the right, two different ligands bind to the same receptor binding site. Only one of the
272:(lifetime of the receptor-ligand complex) does not correlate. High-affinity binding of ligands to receptors is often physiologically important when some of the binding energy can be used to cause a conformational change in the receptor, resulting in altered behavior for example of an associated 1211:
Matera, Carlo; Pucci, Luca; Fiorentini, Chiara; Fucile, Sergio; Missale, Cristina; Grazioso, Giovanni; Clementi, Francesco; Zoli, Michele; De Amici, Marco (2015-08-28). "Bifunctional compounds targeting both D2 and non-α7 nACh receptors: Design, synthesis and pharmacological characterization".
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Bivalent ligands consist of two drug-like molecules (pharmacophores or ligands) connected by an inert linker. There are various kinds of bivalent ligands and are often classified based on what the pharmacophores target. Homobivalent ligands target two of the same receptor types. Heterobivalent
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A privileged scaffold is a molecular framework or chemical moiety that is statistically recurrent among known drugs or among a specific array of biologically active compounds. These privileged elements can be used as a basis for designing new active biological compounds or compound libraries.
503:) determining the affinity is complicated by non-specific hydrophobic interactions. Non-specific hydrophobic interactions can be overcome when the affinity of the ligand is high. For example, PIP2 binds with high affinity to PIP2 gated ion channels. 415:(MP-SPR) can not only quantify the affinity from concentration based assays; but also from the kinetics of association and dissociation, and in the later cases, the conformational change induced upon binding. MP-SPR also enables measurements in high 1512:
Nimczick M, Pemp D, Darras FH, Chen X, Heilmann J, Decker M (August 2014). "Synthesis and biological evaluation of bivalent cannabinoid receptor ligands based on hCB₂R selective benzimidazoles reveal unexpected intrinsic properties".
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one protein chain, typically in or near protein interfaces. Recent research shows that the type of ligands and binding site structure has profound consequences for the evolution, function, allostery and folding of protein compexes.
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Kombarov R, Altieri A, Genis D, Kirpichenok M, Kochubey V, Rakitina N, Titarenko Z (February 2010). "BioCores: identification of a drug/natural product-based privileged structural motif for small-molecule lead discovery".
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Russo O, Berthouze M, Giner M, Soulier JL, Rivail L, Sicsic S, Lezoualc'h F, Jockers R, Berque-Bestel I (September 2007). "Synthesis of specific bivalent probes that functionally interact with 5-HT(4) receptor dimers".
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ligands target two different receptor types. Bitopic ligands target an orthosteric binding sites and allosteric binding sites on the same receptor. In scientific research, bivalent ligands have been used to study
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The interaction of ligands with their binding sites can be characterized in terms of a binding affinity. In general, high-affinity ligand binding results from greater attractive forces between the ligand and its
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while low-affinity ligand binding involves less attractive force. In general, high-affinity binding results in a higher occupancy of the receptor by its ligand than is the case for low-affinity binding; the
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Ligand efficacy refers to the ability of the ligand to produce a biological response upon binding to the target receptor and the quantitative magnitude of this response. This response may be as an
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Erez M, Takemori AE, Portoghese PS (July 1982). "Narcotic antagonistic potency of bivalent ligands which contain beta-naltrexamine. Evidence for bridging between proximal recognition sites".
1682:"A Direct in Vivo Comparison of the Melanocortin Monovalent Agonist Ac-His-DPhe-Arg-Trp-NH2 versus the Bivalent Agonist Ac-His-DPhe-Arg-Trp-PEDG20-His-DPhe-Arg-Trp-NH2: A Bivalent Advantage" 2748: 643:
Other techniques include: fluorescence intensity, bimolecular fluorescence complementation, FRET (fluorescent resonance energy transfer) / FRET quenching surface plasmon resonance,
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Selective ligands have a tendency to bind to very limited kinds of receptor, whereas non-selective ligands bind to several types of receptors. This plays an important role in
1073: 647:, Coimmunopreciptation indirect ELISA, equilibrium dialysis, gel electrophoresis, far western blot, fluorescence polarization anisotropy, electron paramagnetic resonance, 423:(MST), an immobilization-free method was developed. This method allows the determination of the binding affinity without any limitation to the ligand's molecular weight. 328:
value from a competition binding experiment where the concentration of a ligand required to displace 50% of a fixed concentration of reference ligand is determined. The K
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Busnelli M, Kleinau G, Muttenthaler M, Stoev S, Manning M, Bibic L, Howell LA, McCormick PJ, Di Lascio S, Braida D, Sala M, Rovati GE, Bellini T, Chini B (August 2016).
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Main methods to study protein–ligand interactions are principal hydrodynamic and calorimetric techniques, and principal spectroscopic and structural methods such as
1804:"An in Vitro and in Vivo Investigation of Bivalent Ligands That Display Preferential Binding and Functional Activity for Different Melanocortin Receptor Homodimers" 192:
alters the conformation by affecting the three-dimensional shape orientation. The conformation of a receptor protein composes the functional state. Ligands include
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The dramatically increased computing power of supercomputers and personal computers has made it possible to study protein–ligand interactions also by means of
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Berque-Bestel I, Lezoualc'h F, Jockers R (December 2008). "Bivalent ligands as specific pharmacological tools for G protein-coupled receptor dimers".
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Portoghese PS, Ronsisvalle G, Larson DL, Yim CB, Sayre LM, Takemori AE (1982). "Opioid agonist and antagonist bivalent ligands as receptor probes".
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Soulier JL, Russo O, Giner M, Rivail L, Berthouze M, Ongeri S, Maigret B, Fischmeister R, Lezoualc'h F, Sicsic S, Berque-Bestel I (October 2005).
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Baaske P, Wienken CJ, Reineck P, Duhr S, Braun D (March 2010). "Optical thermophoresis for quantifying the buffer dependence of aptamer binding".
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in solution. The solvent provides a chemical environment for the ligand and receptor to adapt, and thus accept or reject each other as partners.
2047:"Targeting putative mu opioid/metabotropic glutamate receptor-5 heteromers produces potent antinociception in a chronic murine bone cancer model" 3526: 1461:
Conn PM, Rogers DC, Stewart JM, Niedel J, Sheffield T (April 1982). "Conversion of a gonadotropin-releasing hormone antagonist to an agonist".
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and coworkers while studying the opioid receptor system. Bivalent ligands were also reported early on by Micheal Conn and coworkers for the
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involve binding competition between a tagged ligand and an untagged ligand. Real-time based methods, which are often label-free, such as
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Agonist binding to a receptor can be characterized both in terms of how much physiological response can be triggered (that is, the
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Bivalent ligands usually tend to be larger than their monovalent counterparts, and therefore, not 'drug-like' as in Lipinski's
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Binding affinity data alone does not determine the overall potency of a drug or a naturally produced (biosynthesized) hormone.
954: 533: 2981: 2803: 1631:"Design and Characterization of Superpotent Bivalent Ligands Targeting Oxytocin Receptor Dimers via a Channel-Like Structure" 671: 585: 321:
value, the concentration required to occupy 50% of the receptor. Ligand affinities are most often measured indirectly as an
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A ligand that can bind to and alter the function of the receptor that triggers a physiological response is called a receptor
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in a quantitative study of the ligand-receptor binding affinity, see the comprehensive article on the configurational
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bonding between a ligand and target molecule is atypical in biological systems. In contrast to the definition of
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Lensing CJ, Adank DN, Wilber SL, Freeman KT, Schnell SM, Speth RC, Zarth AT, Haskell-Luevano C (February 2017).
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Teif VB, Rippe K (October 2010). "Statistical-mechanical lattice models for protein-DNA binding in chromatin".
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Shonberg J, Scammells PJ, Capuano B (June 2011). "Design strategies for bivalent ligands targeting GPCRs".
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Xu L, Josan JS, Vagner J, Caplan MR, Hruby VJ, Mash EA, Lynch RM, Morse DL, Gillies RJ (December 2012).
701: 529: 427: 341: 2096:"Ligand Binding Site Structure Shapes Folding, Assembly and Degradation of Homomeric Protein Complexes" 3419: 3262: 3257: 3139: 3134: 3121: 2656: 2652: 2604: 1991: 1745: 1470: 1407: 1033: 826: 763: 667: 636: 541: 517: 491:, because they bind to several other receptors in addition to the one generating the desired effect. 138: 445:
Potency is a result of the complex interplay of both the binding affinity and the ligand efficacy.
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Akgün E, Javed MI, Lunzer MM, Powers MD, Sham YY, Watanabe Y, Portoghese PS (November 2015).
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This article is about ligands in biochemistry. For ligands in coordination chemistry, see
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of the agonist that is required to produce the physiological response (often measured as
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Lensing CJ, Freeman KT, Schnell SM, Adank DN, Speth RC, Haskell-Luevano C (April 2016).
1749: 1474: 1411: 1037: 830: 767: 524:. Since these early reports, there have been many bivalent ligands reported for various 2702: 2509: 2379: 2348: 2267: 2242: 2218: 2193: 2169: 2144: 2120: 2095: 2071: 2046: 2022: 1979: 1955: 1930: 1828: 1803: 1776: 1733: 1706: 1681: 1586:"Design and synthesis of specific probes for human 5-HT4 receptor dimerization studies" 1185: 1156: 1131: 894: 869: 784: 751: 269: 221: 99: 1438: 1395: 666:, which ended in April 2007. Grid.org has been succeeded by similar projects such as 3539: 3453: 3367: 3235: 3069: 3046: 2780: 2504: 1978:
Daniels DJ, Lenard NR, Etienne CL, Law PY, Roerig SC, Portoghese PS (December 2005).
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agonists shown can maximally stimulate the receptor and, thus, can be defined as a
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Hammes, Stephen R.; Mendelson, Carole R. (2011). "Mechanisms of Hormone Action".
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For hydrophobic ligands (e.g. PIP2) in complex with a hydrophobic protein (e.g.
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Proceedings of the National Academy of Sciences of the United States of America
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Proceedings of the National Academy of Sciences of the United States of America
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Proceedings of the National Academy of Sciences of the United States of America
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and to investigate their properties. This class of ligands was pioneered by
94:, which means 'to bind'. In protein-ligand binding, the ligand is usually a 45: 2312: 2276: 2227: 2178: 2129: 2080: 2031: 1964: 1915: 1872: 1864: 1837: 1785: 1715: 1666: 1612: 1570: 1534: 1380: 1269: 1233: 1194: 1055: 992: 984: 903: 846: 793: 2045:
Smeester BA, Lunzer MM, Akgün E, Beitz AJ, Portoghese PS (November 2014).
1734:"Heterobivalent ligands target cell-surface receptor combinations in vivo" 1490: 1447: 1339: 1304: 177:, in biochemistry it is ambiguous whether the ligand generally binds at a 3372: 3341: 2924: 2499: 2456: 663: 303: 251: 162: 95: 1767: 1296: 387: 3104: 2481: 2013: 1657: 1046: 1021: 691: 454: 284: 239: 123: 111: 1604: 1562: 885: 294: 58: 3084: 2823: 1482: 1429: 277: 166: 31: 220:
interactions, but also by solvent effects that can play a dominant,
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Wienken CJ, Baaske P, Rothbauer U, Braun D, Duhr S (October 2010).
2961: 2866: 2861: 2856: 2851: 2846: 2841: 2836: 2831: 2339:, a public database of measured protein-ligand binding affinities. 821: 484: 386: 381: 293: 178: 40: 3382: 2944: 2939: 2934: 337: 322: 311: 49: 3018: 2744: 2352: 528:(GPCR) systems including cannabinoid, serotonin, oxytocin, and 119: 90:
to serve a biological purpose. The etymology stems from Latin
2243:"Privileged scaffolds for library design and drug discovery" 2345:, a comprehensive database for ligand-protein interactions. 2336: 1355:"Heteromer Induction: An Approach to Unique Pharmacology?" 1155:
Cabanos, C; Wang, M; Han, X; Hansen, SB (8 August 2017).
961:, A complete guide to nonlinear regression, curvefit.com. 1127:
A pharmacology primer: theory, applications, and methods
340:. Ligand affinities can also be measured directly as a 419:
dissociation buffers thanks to a unique optical setup.
752:"Ligand-induced DNA condensation: choosing the model" 395:
Binding affinity is most commonly determined using a
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Two ligands with different receptor binding affinity.
213: 465:, depending on the physiological response produced. 3503: 3432: 3360: 3314: 3307: 3271: 3223: 3187: 3120: 3057: 2875: 2822: 2779: 2670: 2640: 2603: 2578: 2546: 2518: 2472: 2465: 2390: 1353:Portoghese PS, Akgün E, Lunzer MM (January 2017). 27:Substance that forms a complex with a biomolecule 2771:Intercellular signaling peptides and proteins / 2241:Welsch ME, Snyder SA, Stockwell BR (June 2010). 1157:"A Soluble Fluorescent Binding Assay Reveals PIP 1074:this article in the web archive on 2012 April 28 868:Baron R, Setny P, McCammon JA (September 2010). 114:. The binding typically results in a change of 1727: 1725: 1070:Configuration integral (statistical mechanics) 3030: 2756: 2364: 1797: 1795: 1624: 1622: 8: 2809:Transforming growth factor beta superfamily 3311: 3037: 3023: 3015: 2763: 2749: 2741: 2552: 2469: 2371: 2357: 2349: 632:Multi-parametric surface plasmon resonance 413:multi-parametric surface plasmon resonance 401:Homologous competitive binding experiments 298:Two agonists with similar binding affinity 2266: 2217: 2168: 2119: 2070: 2021: 2003: 1954: 1827: 1775: 1757: 1705: 1656: 1646: 1437: 1419: 1370: 1248:evaluation of their analgesic activity". 1184: 1045: 893: 820: 783: 487:that are non-selective tend to have more 874:Journal of the American Chemical Society 1250:European Journal of Medicinal Chemistry 1214:European Journal of Medicinal Chemistry 742: 522:gonadotropin-releasing hormone receptor 3527:Index of evolutionary biology articles 1206: 1204: 952:Homologous competitive binding curves 7: 2918:Nephroblastoma overexpressed protein 1515:Bioorganic & Medicinal Chemistry 1084: 1082: 1072:, 2008. this wiki site is down; see 870:"Water in cavity-ligand recognition" 809:Journal of Physics: Condensed Matter 2967:Parathyroid hormone-related protein 2903:CCN intercellular signaling protein 2618:Transcription preinitiation complex 2247:Current Opinion in Chemical Biology 1896:Current Drug Discovery Technologies 3337:Evolutionary developmental biology 2814:Vascular endothelial growth factor 2586:Signal transducing adaptor protein 1394:Blum JJ, Conn PM (December 1982). 1101:10.1093/oso/9780199744121.003.0006 399:ligand, known as a tagged ligand. 25: 449:Drug or hormone binding efficacy 3294:Evolution of sexual reproduction 2051:European Journal of Pharmacology 1092:Textbook of Endocrine Physiology 627:Dual polarisation interferometry 438:Drug or hormone binding potency 409:dual-polarization interferometry 354:isothermal titration calorimetry 258:Receptor/ligand binding affinity 212:. The rate of binding is called 2913:Connective tissue growth factor 2198:Molecular Biology and Evolution 157:is actually reversible through 3065:Genotype–phenotype distinction 3005:extracellular ligand disorders 2982:Tolloid-like metalloproteinase 2804:Platelet-derived growth factor 1935:Journal of Medicinal Chemistry 1808:Journal of Medicinal Chemistry 1635:Journal of Medicinal Chemistry 1593:Journal of Medicinal Chemistry 1551:Journal of Medicinal Chemistry 1285:Journal of Medicinal Chemistry 1161:Antagonism of TREK-1 Channels" 839:10.1088/0953-8984/22/41/414105 672:Human Proteome Folding Project 586:Fourier transform spectroscopy 332:value can be estimated from IC 1: 3322:Regulation of gene expression 639:and radioligand binding assay 577:Methods used to study binding 3492:Endless Forms Most Beautiful 3272:Evolution of genetic systems 3080:Gene–environment correlation 3075:Gene–environment interaction 2192:Abrusan G, Marsh JA (2019). 2161:10.1016/j.celrep.2018.02.085 2143:Abrusan G, Marsh JA (2018). 2100:Journal of Molecular Biology 2094:Abrusan G, Marsh JA (2019). 2063:10.1016/j.ejphar.2014.09.008 1947:10.1021/acs.jmedchem.5b01245 1820:10.1021/acs.jmedchem.5b01894 1698:10.1021/acschemneuro.6b00399 1648:10.1021/acs.jmedchem.6b00564 1372:10.1021/acschemneuro.7b00002 1332:10.1016/0024-3205(82)90362-9 1262:10.1016/j.ejmech.2014.01.032 1226:10.1016/j.ejmech.2015.06.039 1177:10.1016/j.celrep.2017.07.034 559:Mono- and polydesmic ligands 363:Low-affinity binding (high K 3471:Christiane Nüsslein-Volhard 1095:. Oxford University Press. 776:10.1529/biophysj.105.063909 469:Selective and non-selective 134:, and molecular structure. 3582: 3347:Hedgehog signaling pathway 3224:Developmental architecture 2259:10.1016/j.cbpa.2010.02.018 1908:10.2174/157016308786733591 606:Nuclear magnetic resonance 526:G protein-coupled receptor 472: 161:. Measurably irreversible 29: 3524: 3174:Transgressive segregation 3000: 2555: 2305:10.1007/s11030-009-9157-5 2112:10.1016/j.jmb.2019.07.014 1686:ACS Chemical Neuroscience 1527:10.1016/j.bmc.2014.06.008 1359:ACS Chemical Neuroscience 1001:"A hot road to new drugs" 918:"The difference between K 649:microscale thermophoresis 596:Fluorescence spectroscopy 421:Microscale thermophoresis 405:surface plasmon resonance 358:surface plasmon resonance 52:(orange) bound. Based on 2908:Cysteine-rich protein 61 2888:Agouti signaling protein 2794:Fibroblast growth factor 2698:Neuroendocrine signaling 750:Teif VB (October 2005). 645:bio-layer interferometry 501:lipid-gated ion channels 348:) using methods such as 181:site, as is the case in 116:conformational isomerism 3352:Notch signaling pathway 3327:Gene regulatory network 3210:Dual inheritance theory 2789:Epidermal growth factor 2005:10.1073/pnas.0506627102 1759:10.1073/pnas.1211762109 1421:10.1073/pnas.79.23.7307 660:computational chemistry 616:Atomic force microscope 238:labeled compounds used 48:(blue) with its ligand 36:Ligand (disambiguation) 3566:Ligands (biochemistry) 3400:cis-regulatory element 3308:Control of development 3188:Non-genetic influences 3154:evolutionary landscape 2893:Agouti-related protein 2560:cAMP-dependent pathway 1865:10.1002/cmdc.201100101 985:10.1002/anie.200903998 676:Compute Against Cancer 392: 350:fluorescence quenching 338:Cheng Prusoff equation 306:) and in terms of the 299: 63: 34:. For other uses, see 3511:Nature versus nurture 3415:Cell surface receptor 3332:Evo-devo gene toolkit 3231:Developmental biology 3169:Polygenic inheritance 3095:Quantitative genetics 2987:Tumor necrosis factor 2686:Synaptic transmission 2682:Neurocrine signaling 2605:Transcription factors 2452:PI3K/AKT/mTOR pathway 2210:10.1093/molbev/msz093 1026:Nature Communications 702:Allosteric regulation 530:melanocortin receptor 428:statistical mechanics 390: 342:dissociation constant 297: 153:. The association or 139:intermolecular forces 44: 3420:Transcription factor 3135:Genetic assimilation 3122:Genetic architecture 1326:(12–13): 1283–1286. 1007:. February 24, 2010. 668:World Community Grid 637:Ligand binding assay 518:Philip S. Portoghese 226:non-covalent binding 188:Ligand binding to a 151:Van der Waals forces 3516:Morphogenetic field 3433:Influential figures 2799:Nerve growth factor 2715:Mechanotransduction 2703:Exocrine signalling 2510:Signaling molecules 2384:Signal transduction 2293:Molecular Diversity 1996:2005PNAS..10219208D 1990:(52): 19208–19213. 1750:2012PNAS..10921295X 1744:(52): 21295–21300. 1475:1982Natur.296..653C 1412:1982PNAS...79.7307B 1297:10.1021/jm00349a016 1124:Kenakin TP (2006). 1038:2010NatCo...1..100W 940:. 31 December 2019. 880:(34): 12091–12097. 831:2010JPCM...22O4105T 768:2005BpJ....89.2574T 756:Biophysical Journal 568:Privileged scaffold 495:Hydrophobic ligands 475:Binding selectivity 175:inorganic chemistry 126:which binds to the 3205:Genomic imprinting 2898:Angiogenic protein 2725:Ion channel gating 2457:Integrin receptors 2391:Signaling pathways 1047:10.1038/ncomms1093 957:2007-12-19 at the 722:DNA binding ligand 601:Circular dichroism 591:Raman spectroscopy 432:partition function 393: 300: 224:role which drives 137:Binding occurs by 64: 3533: 3532: 3466:Eric F. Wieschaus 3428: 3427: 3246:Pattern formation 3150:Fitness landscape 3012: 3011: 2738: 2737: 2720:Phototransduction 2678:Intracrine action 2636: 2635: 2599: 2598: 2487:Neurotransmitters 2155:(12): 3265–3276. 2106:(19): 3871–3888. 1941:(21): 8647–8657. 1641:(15): 7152–7166. 1605:10.1021/jm050234z 1599:(20): 6220–6228. 1563:10.1021/jm070552t 1557:(18): 4482–4492. 1521:(15): 3938–3946. 1469:(5858): 653–655. 1406:(23): 7307–7311. 1141:978-0-12-370599-0 1110:978-0-19-974412-1 979:(12): 2238–2241. 973:Angewandte Chemie 938:The Science Snail 886:10.1021/ja1050082 697:Schild regression 611:Mass spectrometry 532:systems, and for 254:binding studies. 210:neurotransmitters 98:which produces a 16:(Redirected from 3573: 3556:Chemical bonding 3476:William McGinnis 3445:Richard Lewontin 3440:C. H. Waddington 3312: 3289:Neutral networks 3039: 3032: 3025: 3016: 2952:Hedgehog protein 2765: 2758: 2751: 2742: 2691:Chemical synapse 2591:Scaffold protein 2553: 2548:Second messenger 2474:Receptor ligands 2470: 2373: 2366: 2359: 2350: 2325: 2324: 2287: 2281: 2280: 2270: 2238: 2232: 2231: 2221: 2204:(8): 1711–1727. 2189: 2183: 2182: 2172: 2140: 2134: 2133: 2123: 2091: 2085: 2084: 2074: 2042: 2036: 2035: 2025: 2007: 1975: 1969: 1968: 1958: 1926: 1920: 1919: 1891: 1885: 1884: 1848: 1842: 1841: 1831: 1814:(7): 3112–3128. 1799: 1790: 1789: 1779: 1761: 1729: 1720: 1719: 1709: 1692:(6): 1262–1278. 1677: 1671: 1670: 1660: 1650: 1626: 1617: 1616: 1590: 1581: 1575: 1574: 1545: 1539: 1538: 1509: 1503: 1502: 1483:10.1038/296653a0 1458: 1452: 1451: 1441: 1423: 1391: 1385: 1384: 1374: 1350: 1344: 1343: 1315: 1309: 1308: 1280: 1274: 1273: 1244: 1238: 1237: 1208: 1199: 1198: 1188: 1171:(6): 1287–1294. 1152: 1146: 1145: 1121: 1115: 1114: 1086: 1077: 1066: 1060: 1059: 1049: 1017: 1011: 1008: 996: 968: 962: 948: 942: 941: 914: 908: 907: 897: 865: 859: 858: 824: 804: 798: 797: 787: 762:(4): 2574–2587. 747: 250:studies and for 206:signaling lipids 190:receptor protein 128:DNA double helix 61: 21: 3581: 3580: 3576: 3575: 3574: 3572: 3571: 3570: 3536: 3535: 3534: 3529: 3520: 3499: 3486:Sean B. Carroll 3424: 3356: 3303: 3267: 3219: 3200:Maternal effect 3183: 3116: 3053: 3043: 3013: 3008: 2996: 2871: 2818: 2775: 2769: 2739: 2734: 2666: 2632: 2595: 2574: 2570:Lipid signaling 2542: 2514: 2461: 2386: 2377: 2333: 2328: 2289: 2288: 2284: 2240: 2239: 2235: 2191: 2190: 2186: 2142: 2141: 2137: 2093: 2092: 2088: 2044: 2043: 2039: 1977: 1976: 1972: 1928: 1927: 1923: 1893: 1892: 1888: 1850: 1849: 1845: 1801: 1800: 1793: 1731: 1730: 1723: 1679: 1678: 1674: 1628: 1627: 1620: 1588: 1583: 1582: 1578: 1547: 1546: 1542: 1511: 1510: 1506: 1460: 1459: 1455: 1393: 1392: 1388: 1352: 1351: 1347: 1317: 1316: 1312: 1282: 1281: 1277: 1246: 1245: 1241: 1210: 1209: 1202: 1160: 1154: 1153: 1149: 1142: 1123: 1122: 1118: 1111: 1088: 1087: 1080: 1067: 1063: 1019: 1018: 1014: 999: 970: 969: 965: 959:Wayback Machine 949: 945: 933: 929: 925: 921: 916: 915: 911: 867: 866: 862: 806: 805: 801: 749: 748: 744: 740: 732:SAMPL Challenge 688: 579: 570: 561: 514:receptor dimers 509: 507:Bivalent ligand 497: 489:adverse effects 477: 471: 463:inverse agonist 451: 440: 426:For the use of 374:partial agonist 366: 347: 335: 331: 326: 320: 315: 260: 53: 39: 28: 23: 22: 18:Receptor ligand 15: 12: 11: 5: 3579: 3577: 3569: 3568: 3563: 3558: 3553: 3551:Cell signaling 3548: 3538: 3537: 3531: 3530: 3525: 3522: 3521: 3519: 3518: 3513: 3507: 3505: 3501: 3500: 3498: 3497: 3496: 3495: 3483: 3478: 3473: 3468: 3463: 3462: 3461: 3450:François Jacob 3447: 3442: 3436: 3434: 3430: 3429: 3426: 3425: 3423: 3422: 3417: 3412: 3407: 3402: 3397: 3392: 3387: 3386: 3385: 3375: 3370: 3364: 3362: 3358: 3357: 3355: 3354: 3349: 3344: 3339: 3334: 3329: 3324: 3318: 3316: 3309: 3305: 3304: 3302: 3301: 3296: 3291: 3286: 3281: 3275: 3273: 3269: 3268: 3266: 3265: 3260: 3255: 3250: 3249: 3248: 3243: 3233: 3227: 3225: 3221: 3220: 3218: 3217: 3212: 3207: 3202: 3197: 3191: 3189: 3185: 3184: 3182: 3181: 3179:Sequence space 3176: 3171: 3166: 3161: 3156: 3147: 3142: 3137: 3132: 3126: 3124: 3118: 3117: 3115: 3114: 3109: 3108: 3107: 3097: 3092: 3087: 3082: 3077: 3072: 3067: 3061: 3059: 3055: 3054: 3044: 3042: 3041: 3034: 3027: 3019: 3010: 3009: 3001: 2998: 2997: 2995: 2994: 2989: 2984: 2979: 2974: 2969: 2964: 2959: 2954: 2949: 2948: 2947: 2942: 2937: 2927: 2922: 2921: 2920: 2915: 2910: 2900: 2895: 2890: 2885: 2879: 2877: 2873: 2872: 2870: 2869: 2864: 2859: 2854: 2849: 2844: 2839: 2834: 2828: 2826: 2820: 2819: 2817: 2816: 2811: 2806: 2801: 2796: 2791: 2785: 2783: 2781:Growth factors 2777: 2776: 2770: 2768: 2767: 2760: 2753: 2745: 2736: 2735: 2733: 2732: 2727: 2722: 2717: 2712: 2711: 2710: 2700: 2695: 2694: 2693: 2688: 2680: 2674: 2672: 2671:Other concepts 2668: 2667: 2665: 2664: 2659: 2650: 2644: 2642: 2638: 2637: 2634: 2633: 2631: 2630: 2625: 2620: 2615: 2609: 2607: 2601: 2600: 2597: 2596: 2594: 2593: 2588: 2582: 2580: 2576: 2575: 2573: 2572: 2567: 2562: 2556: 2550: 2544: 2543: 2541: 2540: 2535: 2530: 2524: 2522: 2516: 2515: 2513: 2512: 2507: 2505:Growth factors 2502: 2497: 2484: 2478: 2476: 2467: 2463: 2462: 2460: 2459: 2454: 2449: 2444: 2439: 2434: 2429: 2424: 2423: 2422: 2417: 2407: 2402: 2400: 2394: 2392: 2388: 2387: 2380:Cell signaling 2378: 2376: 2375: 2368: 2361: 2353: 2347: 2346: 2340: 2332: 2331:External links 2329: 2327: 2326: 2299:(1): 193–200. 2282: 2233: 2184: 2135: 2086: 2037: 1970: 1921: 1902:(4): 312–318. 1886: 1859:(6): 963–974. 1843: 1791: 1721: 1672: 1618: 1576: 1540: 1504: 1453: 1386: 1365:(3): 426–428. 1345: 1310: 1291:(7): 847–849. 1275: 1239: 1200: 1158: 1147: 1140: 1134:. p. 79. 1132:Academic Press 1116: 1109: 1078: 1061: 1012: 1010: 1009: 963: 943: 931: 927: 923: 919: 909: 860: 815:(41): 414105. 799: 741: 739: 736: 735: 734: 729: 724: 719: 714: 709: 704: 699: 694: 687: 684: 641: 640: 634: 629: 624: 618: 613: 608: 603: 598: 593: 588: 578: 575: 569: 566: 560: 557: 546:nACh receptors 508: 505: 496: 493: 473:Main article: 470: 467: 450: 447: 439: 436: 364: 345: 333: 329: 324: 318: 313: 270:residence time 259: 256: 147:hydrogen bonds 132:hydrophobicity 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 3578: 3567: 3564: 3562: 3559: 3557: 3554: 3552: 3549: 3547: 3544: 3543: 3541: 3528: 3523: 3517: 3514: 3512: 3509: 3508: 3506: 3502: 3494: 3493: 3489: 3488: 3487: 3484: 3482: 3479: 3477: 3474: 3472: 3469: 3467: 3464: 3460: 3457: 3456: 3455: 3454:Jacques Monod 3451: 3448: 3446: 3443: 3441: 3438: 3437: 3435: 3431: 3421: 3418: 3416: 3413: 3411: 3408: 3406: 3403: 3401: 3398: 3396: 3393: 3391: 3388: 3384: 3381: 3380: 3379: 3376: 3374: 3371: 3369: 3368:Homeotic gene 3366: 3365: 3363: 3359: 3353: 3350: 3348: 3345: 3343: 3340: 3338: 3335: 3333: 3330: 3328: 3325: 3323: 3320: 3319: 3317: 3313: 3310: 3306: 3300: 3297: 3295: 3292: 3290: 3287: 3285: 3282: 3280: 3277: 3276: 3274: 3270: 3264: 3261: 3259: 3256: 3254: 3251: 3247: 3244: 3242: 3239: 3238: 3237: 3236:Morphogenesis 3234: 3232: 3229: 3228: 3226: 3222: 3216: 3213: 3211: 3208: 3206: 3203: 3201: 3198: 3196: 3193: 3192: 3190: 3186: 3180: 3177: 3175: 3172: 3170: 3167: 3165: 3162: 3160: 3157: 3155: 3151: 3148: 3146: 3143: 3141: 3138: 3136: 3133: 3131: 3128: 3127: 3125: 3123: 3119: 3113: 3110: 3106: 3103: 3102: 3101: 3098: 3096: 3093: 3091: 3088: 3086: 3083: 3081: 3078: 3076: 3073: 3071: 3070:Reaction norm 3068: 3066: 3063: 3062: 3060: 3056: 3052: 3048: 3040: 3035: 3033: 3028: 3026: 3021: 3020: 3017: 3007: 3006: 2999: 2993: 2990: 2988: 2985: 2983: 2980: 2978: 2975: 2973: 2970: 2968: 2965: 2963: 2960: 2958: 2955: 2953: 2950: 2946: 2943: 2941: 2938: 2936: 2933: 2932: 2931: 2928: 2926: 2923: 2919: 2916: 2914: 2911: 2909: 2906: 2905: 2904: 2901: 2899: 2896: 2894: 2891: 2889: 2886: 2884: 2881: 2880: 2878: 2874: 2868: 2865: 2863: 2860: 2858: 2855: 2853: 2850: 2848: 2845: 2843: 2840: 2838: 2835: 2833: 2830: 2829: 2827: 2825: 2821: 2815: 2812: 2810: 2807: 2805: 2802: 2800: 2797: 2795: 2792: 2790: 2787: 2786: 2784: 2782: 2778: 2774: 2766: 2761: 2759: 2754: 2752: 2747: 2746: 2743: 2731: 2728: 2726: 2723: 2721: 2718: 2716: 2713: 2709: 2706: 2705: 2704: 2701: 2699: 2696: 2692: 2689: 2687: 2684: 2683: 2681: 2679: 2676: 2675: 2673: 2669: 2663: 2660: 2658: 2654: 2651: 2649: 2646: 2645: 2643: 2639: 2629: 2626: 2624: 2621: 2619: 2616: 2614: 2611: 2610: 2608: 2606: 2602: 2592: 2589: 2587: 2584: 2583: 2581: 2577: 2571: 2568: 2566: 2563: 2561: 2558: 2557: 2554: 2551: 2549: 2545: 2539: 2536: 2534: 2533:Intracellular 2531: 2529: 2526: 2525: 2523: 2521: 2517: 2511: 2508: 2506: 2503: 2501: 2498: 2496: 2495:Neurohormones 2492: 2491:Neuropeptides 2488: 2485: 2483: 2480: 2479: 2477: 2475: 2471: 2468: 2464: 2458: 2455: 2453: 2450: 2448: 2445: 2443: 2442:Fas apoptosis 2440: 2438: 2435: 2433: 2430: 2428: 2425: 2421: 2418: 2416: 2413: 2412: 2411: 2408: 2406: 2403: 2401: 2399: 2396: 2395: 2393: 2389: 2385: 2381: 2374: 2369: 2367: 2362: 2360: 2355: 2354: 2351: 2344: 2341: 2338: 2335: 2334: 2330: 2322: 2318: 2314: 2310: 2306: 2302: 2298: 2294: 2286: 2283: 2278: 2274: 2269: 2264: 2260: 2256: 2253:(3): 347–61. 2252: 2248: 2244: 2237: 2234: 2229: 2225: 2220: 2215: 2211: 2207: 2203: 2199: 2195: 2188: 2185: 2180: 2176: 2171: 2166: 2162: 2158: 2154: 2150: 2146: 2139: 2136: 2131: 2127: 2122: 2117: 2113: 2109: 2105: 2101: 2097: 2090: 2087: 2082: 2078: 2073: 2068: 2064: 2060: 2056: 2052: 2048: 2041: 2038: 2033: 2029: 2024: 2019: 2015: 2011: 2006: 2001: 1997: 1993: 1989: 1985: 1981: 1974: 1971: 1966: 1962: 1957: 1952: 1948: 1944: 1940: 1936: 1932: 1925: 1922: 1917: 1913: 1909: 1905: 1901: 1897: 1890: 1887: 1882: 1878: 1874: 1870: 1866: 1862: 1858: 1854: 1847: 1844: 1839: 1835: 1830: 1825: 1821: 1817: 1813: 1809: 1805: 1798: 1796: 1792: 1787: 1783: 1778: 1773: 1769: 1765: 1760: 1755: 1751: 1747: 1743: 1739: 1735: 1728: 1726: 1722: 1717: 1713: 1708: 1703: 1699: 1695: 1691: 1687: 1683: 1676: 1673: 1668: 1664: 1659: 1654: 1649: 1644: 1640: 1636: 1632: 1625: 1623: 1619: 1614: 1610: 1606: 1602: 1598: 1594: 1587: 1580: 1577: 1572: 1568: 1564: 1560: 1556: 1552: 1544: 1541: 1536: 1532: 1528: 1524: 1520: 1516: 1508: 1505: 1500: 1496: 1492: 1488: 1484: 1480: 1476: 1472: 1468: 1464: 1457: 1454: 1449: 1445: 1440: 1435: 1431: 1427: 1422: 1417: 1413: 1409: 1405: 1401: 1397: 1390: 1387: 1382: 1378: 1373: 1368: 1364: 1360: 1356: 1349: 1346: 1341: 1337: 1333: 1329: 1325: 1321: 1320:Life Sciences 1314: 1311: 1306: 1302: 1298: 1294: 1290: 1286: 1279: 1276: 1271: 1267: 1263: 1259: 1255: 1251: 1243: 1240: 1235: 1231: 1227: 1223: 1219: 1215: 1207: 1205: 1201: 1196: 1192: 1187: 1182: 1178: 1174: 1170: 1166: 1162: 1151: 1148: 1143: 1137: 1133: 1129: 1128: 1120: 1117: 1112: 1106: 1102: 1098: 1094: 1093: 1085: 1083: 1079: 1075: 1071: 1068:Vu-Quoc, L., 1065: 1062: 1057: 1053: 1048: 1043: 1039: 1035: 1031: 1027: 1023: 1016: 1013: 1006: 1002: 998: 997: 994: 990: 986: 982: 978: 974: 967: 964: 960: 956: 953: 947: 944: 939: 935: 913: 910: 905: 901: 896: 891: 887: 883: 879: 875: 871: 864: 861: 856: 852: 848: 844: 840: 836: 832: 828: 823: 818: 814: 810: 803: 800: 795: 791: 786: 781: 777: 773: 769: 765: 761: 757: 753: 746: 743: 737: 733: 730: 728: 725: 723: 720: 718: 715: 713: 710: 708: 705: 703: 700: 698: 695: 693: 690: 689: 685: 683: 681: 677: 673: 669: 665: 661: 656: 654: 650: 646: 638: 635: 633: 630: 628: 625: 622: 619: 617: 614: 612: 609: 607: 604: 602: 599: 597: 594: 592: 589: 587: 584: 583: 582: 576: 574: 567: 565: 558: 556: 554: 549: 547: 543: 539: 535: 531: 527: 523: 519: 515: 506: 504: 502: 494: 492: 490: 486: 482: 476: 468: 466: 464: 460: 456: 448: 446: 443: 437: 435: 433: 429: 424: 422: 418: 414: 410: 406: 402: 398: 389: 385: 383: 379: 375: 371: 361: 359: 355: 351: 343: 339: 327: 316: 309: 308:concentration 305: 296: 292: 290: 286: 281: 279: 275: 271: 266: 257: 255: 253: 249: 245: 241: 237: 233: 229: 227: 223: 219: 215: 211: 207: 203: 199: 195: 191: 186: 184: 180: 176: 172: 168: 164: 160: 156: 152: 148: 144: 140: 135: 133: 129: 125: 121: 117: 113: 109: 105: 101: 97: 93: 89: 85: 82:that forms a 81: 77: 73: 69: 60: 56: 51: 47: 43: 37: 33: 19: 3546:Biomolecules 3490: 3404: 3383:eyeless gene 3279:Evolvability 3253:Segmentation 3130:Canalisation 3100:Heterochrony 3090:Heritability 3058:Key concepts 3002: 2772: 2730:Gap junction 2565:Ca signaling 2528:Cell surface 2473: 2296: 2292: 2285: 2250: 2246: 2236: 2201: 2197: 2187: 2152: 2149:Cell Reports 2148: 2138: 2103: 2099: 2089: 2054: 2050: 2040: 1987: 1983: 1973: 1938: 1934: 1924: 1899: 1895: 1889: 1856: 1852: 1846: 1811: 1807: 1741: 1737: 1689: 1685: 1675: 1638: 1634: 1596: 1592: 1579: 1554: 1550: 1543: 1518: 1514: 1507: 1466: 1462: 1456: 1403: 1399: 1389: 1362: 1358: 1348: 1323: 1319: 1313: 1288: 1284: 1278: 1253: 1249: 1242: 1217: 1213: 1168: 1165:Cell Reports 1164: 1150: 1126: 1119: 1091: 1064: 1029: 1025: 1015: 1004: 976: 972: 966: 946: 937: 912: 877: 873: 863: 812: 808: 802: 759: 755: 745: 712:Docking@Home 680:Folding@Home 657: 642: 621:Paramagnetic 580: 571: 562: 553:rule of five 550: 510: 498: 481:pharmacology 478: 452: 444: 441: 425: 400: 397:radiolabeled 394: 373: 370:full agonist 369: 362: 336:through the 301: 282: 261: 236:radioisotope 232:Radioligands 230: 187: 171:metalorganic 159:dissociation 136: 110:on a target 91: 75: 72:pharmacology 68:biochemistry 65: 3481:Mike Levine 3390:Distal-less 3215:Polyphenism 3195:Epigenetics 3047:development 2992:Wnt protein 2977:Somatomedin 2641:By distance 2579:Assistants: 2538:Co-receptor 1853:ChemMedChem 1658:2434/430357 1256:: 222–232. 1220:: 367–383. 717:GPUGRID.net 707:Ki Database 653:switchSENSE 289:antagonists 274:ion channel 143:ionic bonds 88:biomolecule 3540:Categories 3459:Lac operon 3284:Robustness 3263:Modularity 3258:Metamerism 3164:Plasticity 3159:Pleiotropy 3112:Heterotopy 2972:Semaphorin 2957:Interferon 2930:Endothelin 2708:Pheromones 2648:Juxtacrine 1032:(7): 100. 738:References 459:antagonist 218:host–guest 202:activators 198:inhibitors 194:substrates 183:hemoglobin 141:, such as 3410:Morphogen 3395:Engrailed 3378:Pax genes 3299:Tinkering 3145:Epistasis 3140:Dominance 3051:phenotype 3003:see also 2883:Adipokine 2662:Endocrine 2657:Paracrine 2653:Autocrine 2520:Receptors 2500:Cytokines 2337:BindingDB 2057:: 48–52. 822:1004.5514 727:BindingDB 540:systems ( 382:nanomolar 80:substance 46:Myoglobin 3561:Proteins 3373:Hox gene 3361:Elements 3342:Homeobox 2925:Cytokine 2482:Hormones 2432:JAK-STAT 2420:MAPK/ERK 2415:TGF beta 2321:23331540 2313:19468851 2277:20303320 2228:31004156 2179:29562182 2130:31306664 2081:25239072 2032:16365317 1965:26451468 1916:19075611 1881:10561038 1873:21520422 1838:26959173 1786:23236171 1768:42553664 1716:28128928 1667:27420737 1613:16190749 1571:17676726 1535:24984935 1381:28139906 1270:24534538 1234:26164842 1195:28793254 1056:20981028 1005:Phys.org 993:20186894 955:Archived 930:, and EC 904:20695475 847:21386588 794:16085765 686:See also 664:grid.org 483:, where 304:efficacy 265:receptor 252:in vitro 214:affinity 163:covalent 96:molecule 62:​ 3504:Debates 3315:Systems 3241:Eyespot 3105:Neoteny 2773:ligands 2613:General 2437:Akt/PKB 2268:2908274 2219:6657754 2170:5873459 2121:6739599 2072:4259840 2023:1323165 2014:4152590 1992:Bibcode 1956:5055304 1829:5679017 1777:3535626 1746:Bibcode 1707:5679024 1499:4303982 1491:6280058 1471:Bibcode 1448:6296828 1408:Bibcode 1340:6292615 1305:7108900 1186:5586213 1034:Bibcode 934:values" 895:2933114 827:Bibcode 785:1366757 764:Bibcode 692:Agonist 455:agonist 285:agonist 244:tracers 240:in vivo 155:docking 124:protein 112:protein 104:binding 86:with a 84:complex 3405:Ligand 3085:Operon 2824:Ephrin 2466:Agents 2343:BioLiP 2319:  2311:  2275:  2265:  2226:  2216:  2177:  2167:  2128:  2118:  2079:  2069:  2030:  2020:  2012:  1963:  1953:  1914:  1879:  1871:  1836:  1826:  1784:  1774:  1766:  1714:  1704:  1665:  1611:  1569:  1533:  1497:  1489:  1463:Nature 1446:  1439:347328 1436:  1428:  1379:  1338:  1303:  1268:  1232:  1193:  1183:  1138:  1107:  1054:  991:  902:  892:  855:103345 853:  845:  792:  782:  623:probes 417:saline 380:(nM = 278:enzyme 222:steric 208:, and 167:ligand 100:signal 92:ligare 76:ligand 32:Ligand 2962:Kinin 2876:Other 2867:EFNB3 2862:EFNB2 2857:EFNB1 2852:EFNA5 2847:EFNA4 2842:EFNA3 2837:EFNA2 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Index

Receptor ligand
Ligand
Ligand (disambiguation)

Myoglobin
heme
PDB
1MBO
biochemistry
pharmacology
substance
complex
biomolecule
molecule
signal
binding
site
protein
conformational isomerism
ion
protein
DNA double helix
hydrophobicity
intermolecular forces
ionic bonds
hydrogen bonds
Van der Waals forces
docking
dissociation
covalent

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