Turning a protein kinase on or off from a single allosteric site via disulfide trapping.
Sadowsky, J.D., Burlingame, M.A., Wolan, D.W., McClendon, C.L., Jacobson, M.P., Wells, J.A.(2011) Proc Natl Acad Sci U S A 108: 6056-6061
- PubMed: 21430264 
- DOI: 10.1073/pnas.1102376108
- Primary Citation of Related Structures:  
3ORX, 3ORZ, 3OTU - PubMed Abstract: 
There is significant interest in identifying and characterizing allosteric sites in enzymes such as protein kinases both for understanding allosteric mechanisms as well as for drug discovery. Here, we apply a site-directed technology, disulfide trapping, to interrogate structurally and functionally how an allosteric site on the Ser/Thr kinase, 3-phosphoinositide-dependent kinase 1 (PDK1)--the PDK1-interacting-fragment (PIF) pocket--is engaged by an activating peptide motif on downstream substrate kinases (PIFtides) and by small molecule fragments ...