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Globular and disordered-the non-identical twins in protein-protein interactions.


ABSTRACT: In biology proteins from different structural classes interact across and within classes in ways that are optimized to achieve balanced functional outputs. The interactions between intrinsically disordered proteins (IDPs) and other proteins rely on changes in flexibility and this is seen as a strong determinant for their function. This has fostered the notion that IDP's bind with low affinity but high specificity. Here we have analyzed available detailed thermodynamic data for protein-protein interactions to put to the test if the thermodynamic profiles of IDP interactions differ from those of other protein-protein interactions. We find that ordered proteins and the disordered ones act as non-identical twins operating by similar principles but where the disordered proteins complexes are on average less stable by 2.5 kcal mol(-1).

SUBMITTER: Teilum K 

PROVIDER: S-EPMC4496568 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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Globular and disordered-the non-identical twins in protein-protein interactions.

Teilum Kaare K   Olsen Johan G JG   Kragelund Birthe B BB  

Frontiers in molecular biosciences 20150709


In biology proteins from different structural classes interact across and within classes in ways that are optimized to achieve balanced functional outputs. The interactions between intrinsically disordered proteins (IDPs) and other proteins rely on changes in flexibility and this is seen as a strong determinant for their function. This has fostered the notion that IDP's bind with low affinity but high specificity. Here we have analyzed available detailed thermodynamic data for protein-protein in  ...[more]

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