Coarse-grained modeling of allosteric regulation in protein receptors.

Journal Article (Journal Article)

Allosteric regulation provides highly specific ligand recognition and signaling by transmembrane protein receptors. Unlike functions of protein molecular machines that rely on large-scale conformational transitions, signal transduction in receptors appears to be mediated by more subtle structural motions that are difficult to identify. We describe a theoretical model for allosteric regulation in receptors that addresses a fundamental riddle of signaling: What are the structural origins of the receptor agonism (specific signaling response to ligand binding)? The model suggests that different signaling pathways in bovine rhodopsin or human beta(2)-adrenergic receptor can be mediated by specific structural motions in the receptors. We discuss implications for understanding the receptor agonism, particularly the recently observed "biased agonism" (selected activation of specific signaling pathways), and for developing rational structure-based drug-design strategies.

Full Text

Duke Authors

Cited Authors

  • Balabin, IA; Yang, W; Beratan, DN

Published Date

  • August 2009

Published In

Volume / Issue

  • 106 / 34

Start / End Page

  • 14253 - 14258

PubMed ID

  • 19706508

Pubmed Central ID

  • PMC2732817

Electronic International Standard Serial Number (EISSN)

  • 1091-6490

International Standard Serial Number (ISSN)

  • 0027-8424

Digital Object Identifier (DOI)

  • 10.1073/pnas.0901811106


  • eng