Structural highlights
Function
[MCL1_MOUSE] Involved in the regulation of apoptosis versus cell survival, and in the maintenance of viability but not of proliferation. Mediates its effects by interactions with a number of other regulators of apoptosis.
Publication Abstract from PubMed
Direct chemical modifications provide a simple and effective means to "translate" bioactive helical peptides into potential therapeutics targeting intracellular protein-protein interactions. We previously showed that distance-matching bisaryl cross-linkers can reinforce peptide helices containing two cysteines at the i and i+7 positions and confer cell permeability to the cross-linked peptides. Here we report the first crystal structure of a biphenyl-cross-linked Noxa peptide in complex with its target Mcl-1 at 2.0 A resolution. Guided by this structure, we remodeled the surface of this cross-linked peptide through side-chain substitution and N-methylation and obtained a pair of cross-linked peptides with substantially increased helicity, cell permeability, proteolytic stability, and cell-killing activity in Mcl-1-overexpressing U937 cells.
Rational design of proteolytically stable, cell-permeable peptide-based selective Mcl-1 inhibitors.,Muppidi A, Doi K, Edwardraja S, Drake EJ, Gulick AM, Wang HG, Lin Q J Am Chem Soc. 2012 Sep 12;134(36):14734-7. doi: 10.1021/ja306864v. Epub 2012 Sep, 4. PMID:22920569[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Muppidi A, Doi K, Edwardraja S, Drake EJ, Gulick AM, Wang HG, Lin Q. Rational design of proteolytically stable, cell-permeable peptide-based selective Mcl-1 inhibitors. J Am Chem Soc. 2012 Sep 12;134(36):14734-7. doi: 10.1021/ja306864v. Epub 2012 Sep, 4. PMID:22920569 doi:10.1021/ja306864v
