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• W2104710588 endingPage "e1003363" @default.
• W2104710588 startingPage "e1003363" @default.
• W2104710588 abstract "Achieving facile specific recognition is essential for intrinsically disordered proteins (IDPs) that are involved in cellular signaling and regulation. Consideration of the physical time scales of protein folding and diffusion-limited protein-protein encounter has suggested that the frequent requirement of protein folding for specific IDP recognition could lead to kinetic bottlenecks. How IDPs overcome such potential kinetic bottlenecks to viably function in signaling and regulation in general is poorly understood. Our recent computational and experimental study of cell-cycle regulator p27 (Ganguly et al., J. Mol. Biol. (2012)) demonstrated that long-range electrostatic forces exerted on enriched charges of IDPs could accelerate protein-protein encounter via “electrostatic steering” and at the same time promote “folding-competent” encounter topologies to enhance the efficiency of IDP folding upon encounter. Here, we further investigated the coupled binding and folding mechanisms and the roles of electrostatic forces in the formation of three IDP complexes with more complex folded topologies. The surface electrostatic potentials of these complexes lack prominent features like those observed for the p27/Cdk2/cyclin A complex to directly suggest the ability of electrostatic forces to facilitate folding upon encounter. Nonetheless, similar electrostatically accelerated encounter and folding mechanisms were consistently predicted for all three complexes using topology-based coarse-grained simulations. Together with our previous analysis of charge distributions in known IDP complexes, our results support a prevalent role of electrostatic interactions in promoting efficient coupled binding and folding for facile specific recognition. These results also suggest that there is likely a co-evolution of IDP folded topology, charge characteristics, and coupled binding and folding mechanisms, driven at least partially by the need to achieve fast association kinetics for cellular signaling and regulation." @default.
• W2104710588 created "2016-06-24" @default.
• W2104710588 creator A5017001198 @default.
• W2104710588 creator A5032839759 @default.
• W2104710588 creator A5040018664 @default.
• W2104710588 date "2013-11-21" @default.
• W2104710588 modified "2023-10-16" @default.
• W2104710588 title "Electrostatically Accelerated Encounter and Folding for Facile Recognition of Intrinsically Disordered Proteins" @default.
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• W2104710588 doi "https://doi.org/10.1371/journal.pcbi.1003363" @default.
• W2104710588 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3836701" @default.
• W2104710588 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/24278008" @default.
• W2104710588 hasPublicationYear "2013" @default.
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