Coupled folding and binding with α-helix-forming molecular recognition elements

Christopher J. Oldfield, Yugong Cheng, Marc S. Cortese, Pedro Romero, Vladimir N. Uversky, A. Keith Dunker

Research output: Contribution to journalArticle

467 Scopus citations

Abstract

Many protein-protein and protein-nucleic acid interactions involve coupled folding and binding of at least one of the partners. Here, we propose a protein structural element or feature that mediates the binding events of initially disordered regions. This element consists of a short region that undergoes coupled binding and folding within a longer region of disorder. We call these features "molecular recognition elements" (MoREs). Examples of MoREs bound to their partners can be found in the α-helix, β-strand, polyproline II helix, or irregular secondary structure conformations, and in various mixtures of the four structural forms. Here we describe an algorithm that identifies regions having propensities to become α-helix-forming molecular recognition elements (α-MoREs) based on a discriminant function that indicates such regions while giving a low false-positive error rate on a large collection of structured proteins. Application of this algorithm to databases of genomics and functionally annotated proteins indicates that α-MoREs are likely to play important roles protein-protein interactions involved in signaling events.

Original languageEnglish (US)
Pages (from-to)12454-12470
Number of pages17
JournalBiochemistry
Volume44
Issue number37
DOIs
StatePublished - Sep 20 2005

ASJC Scopus subject areas

  • Biochemistry

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    Oldfield, C. J., Cheng, Y., Cortese, M. S., Romero, P., Uversky, V. N., & Dunker, A. K. (2005). Coupled folding and binding with α-helix-forming molecular recognition elements. Biochemistry, 44(37), 12454-12470. https://doi.org/10.1021/bi050736e