5vwz
Bak in complex with Bim-h3Pc
Structural highlights
FunctionBAK_HUMAN In the presence of an appropriate stimulus, accelerates programmed cell death by binding to, and antagonizing the anti-apoptotic action of BCL2 or its adenovirus homolog E1B 19k protein. Low micromolar levels of zinc ions inhibit the promotion of apoptosis.[1] [2] Publication Abstract from PubMedCertain BH3-only proteins transiently bind and activate Bak and Bax, initiating their oligomerization and the permeabilization of the mitochondrial outer membrane, a pivotal step in the mitochondrial pathway to apoptosis. Here we describe the first crystal structures of an activator BH3 peptide bound to Bak and illustrate their use in the design of BH3 derivatives capable of inhibiting human Bak on mitochondria. These BH3 derivatives compete for the activation site at the canonical groove, are the first engineered inhibitors of Bak activation, and support the role of key conformational transitions associated with Bak activation. Conversion of Bim-BH3 from Activator to Inhibitor of Bak through Structure-Based Design.,Brouwer JM, Lan P, Cowan AD, Bernardini JP, Birkinshaw RW, van Delft MF, Sleebs BE, Robin AY, Wardak A, Tan IK, Reljic B, Lee EF, Fairlie WD, Call MJ, Smith BJ, Dewson G, Lessene G, Colman PM, Czabotar PE Mol Cell. 2017 Nov 16;68(4):659-672.e9. doi: 10.1016/j.molcel.2017.11.001. PMID:29149594[3] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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