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Review
. 2010 Oct;35(10):565-74.
doi: 10.1016/j.tibs.2010.04.003. Epub 2010 May 5.

WD40 proteins propel cellular networks

Christian U Stirnimann  1 , Evangelia Petsalaki, Robert B Russell, Christoph W Müller
Affiliations
Review

WD40 proteins propel cellular networks

Christian U Stirnimann et al. Trends Biochem Sci. 2010 Oct.

Abstract

Recent findings indicate that WD40 domains play central roles in biological processes by acting as hubs in cellular networks; however, they have been studied less intensely than other common domains, such as the kinase, PDZ or SH3 domains. As suggested by various interactome studies, they are among the most promiscuous interactors. Structural studies suggest that this property stems from their ability, as scaffolds, to interact with diverse proteins, peptides or nucleic acids using multiple surfaces or modes of interaction. A general scaffolding role is supported by the fact that no WD40 domain has been found with intrinsic enzymatic activity despite often being part of large molecular machines. We discuss the WD40 domain distributions in protein networks and structures of WD40-containing assemblies to demonstrate their versatility in mediating critical cellular functions.

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