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| | ==Crystal structure of human Mcl-1 in complex with modified Bim BH3 peptide SAH-MS1-14== | | ==Crystal structure of human Mcl-1 in complex with modified Bim BH3 peptide SAH-MS1-14== |
| - | <StructureSection load='5w8f' size='340' side='right' caption='[[5w8f]], [[Resolution|resolution]] 1.85Å' scene=''> | + | <StructureSection load='5w8f' size='340' side='right'caption='[[5w8f]], [[Resolution|resolution]] 1.85Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[5w8f]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5W8F OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5W8F FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[5w8f]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5W8F OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5W8F FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.85Å</td></tr> |
| - | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MK8:2-METHYL-L-NORLEUCINE'>MK8</scene>, <scene name='pdbligand=NH2:AMINO+GROUP'>NH2</scene>, <scene name='pdbligand=NLE:NORLEUCINE'>NLE</scene></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MK8:2-METHYL-L-NORLEUCINE'>MK8</scene>, <scene name='pdbligand=NH2:AMINO+GROUP'>NH2</scene>, <scene name='pdbligand=NLE:NORLEUCINE'>NLE</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5w89|5w89]]</td></tr>
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5w8f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5w8f OCA], [https://pdbe.org/5w8f PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5w8f RCSB], [https://www.ebi.ac.uk/pdbsum/5w8f PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5w8f ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MCL1, BCL2L3 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
| + | |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5w8f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5w8f OCA], [http://pdbe.org/5w8f PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5w8f RCSB], [http://www.ebi.ac.uk/pdbsum/5w8f PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5w8f ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/MCL1_HUMAN MCL1_HUMAN]] 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. Isoform 1 inhibits apoptosis. Isoform 2 promotes apoptosis.<ref>PMID:10766760</ref> | + | [https://www.uniprot.org/uniprot/MCL1_HUMAN MCL1_HUMAN] 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. Isoform 1 inhibits apoptosis. Isoform 2 promotes apoptosis.<ref>PMID:10766760</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </div> | | </div> |
| | <div class="pdbe-citations 5w8f" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 5w8f" style="background-color:#fffaf0;"></div> |
| | + | |
| | + | ==See Also== |
| | + | *[[B-cell lymphoma proteins 3D structures|B-cell lymphoma proteins 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Human]] | + | [[Category: Homo sapiens]] |
| - | [[Category: Araghi, R Rezaei]] | + | [[Category: Large Structures]] |
| - | [[Category: Grant, R A]] | + | [[Category: Grant RA]] |
| - | [[Category: Jenson, J M]] | + | [[Category: Jenson JM]] |
| - | [[Category: Keating, A E]] | + | [[Category: Keating AE]] |
| - | [[Category: Apoptosis]] | + | [[Category: Rezaei Araghi R]] |
| - | [[Category: Bcl-2 family]]
| + | |
| - | [[Category: Bh3 domain]]
| + | |
| - | [[Category: Peptide binding protein]]
| + | |
| - | [[Category: Stapled peptide]]
| + | |
| Structural highlights
Function
MCL1_HUMAN 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. Isoform 1 inhibits apoptosis. Isoform 2 promotes apoptosis.[1]
Publication Abstract from PubMed
Bcl-2 family proteins regulate apoptosis, and aberrant interactions of overexpressed antiapoptotic family members such as Mcl-1 promote cell transformation, cancer survival, and resistance to chemotherapy. Discovering potent and selective Mcl-1 inhibitors that can relieve apoptotic blockades is thus a high priority for cancer research. An attractive strategy for disabling Mcl-1 involves using designer peptides to competitively engage its binding groove, mimicking the structural mechanism of action of native sensitizer BH3-only proteins. We transformed Mcl-1-binding peptides into alpha-helical, cell-penetrating constructs that are selectively cytotoxic to Mcl-1-dependent cancer cells. Critical to the design of effective inhibitors was our introduction of an all-hydrocarbon cross-link or "staple" that stabilizes alpha-helical structure, increases target binding affinity, and independently confers binding specificity for Mcl-1 over related Bcl-2 family paralogs. Two crystal structures of complexes at 1.4 A and 1.9 A resolution demonstrate how the hydrophobic staple induces an unanticipated structural rearrangement in Mcl-1 upon binding. Systematic sampling of staple location and iterative optimization of peptide sequence in accordance with established design principles provided peptides that target intracellular Mcl-1. This work provides proof of concept for the development of potent, selective, and cell-permeable stapled peptides for therapeutic targeting of Mcl-1 in cancer, applying a design and validation workflow applicable to a host of challenging biomedical targets.
Iterative optimization yields Mcl-1-targeting stapled peptides with selective cytotoxicity to Mcl-1-dependent cancer cells.,Rezaei Araghi R, Bird GH, Ryan JA, Jenson JM, Godes M, Pritz JR, Grant RA, Letai A, Walensky LD, Keating AE Proc Natl Acad Sci U S A. 2018 Jan 16. pii: 1712952115. doi:, 10.1073/pnas.1712952115. PMID:29339518[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Bingle CD, Craig RW, Swales BM, Singleton V, Zhou P, Whyte MK. Exon skipping in Mcl-1 results in a bcl-2 homology domain 3 only gene product that promotes cell death. J Biol Chem. 2000 Jul 21;275(29):22136-46. PMID:10766760 doi:10.1074/jbc.M909572199
- ↑ Rezaei Araghi R, Bird GH, Ryan JA, Jenson JM, Godes M, Pritz JR, Grant RA, Letai A, Walensky LD, Keating AE. Iterative optimization yields Mcl-1-targeting stapled peptides with selective cytotoxicity to Mcl-1-dependent cancer cells. Proc Natl Acad Sci U S A. 2018 Jan 16. pii: 1712952115. doi:, 10.1073/pnas.1712952115. PMID:29339518 doi:http://dx.doi.org/10.1073/pnas.1712952115
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