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Specific interactions between proteins govern essential physiological processes including signaling. Many enzymes, especially the family of serine/threonine phosphatases (PSPs: PP1, PP2A, and PP2B/calcineurin/CN), recruit substrates and regulatory proteins by binding short linear motifs (SLiMs), short sequences found within intrinsically disordered regions that mediate specific protein-protein interactions...
The presequence translocase TIM23 is a highly dynamic complex in which its subunits can adopt multiple conformations and undergo association-dissociation to facilitate import of proteins into mitochondria. Despite the importance of protein-protein interactions in TIM23, little is known about the molecular details of these processes. Using nuclear magnetic resonance spectroscopy, we characterized the...
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