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| | <StructureSection load='6n8y' size='340' side='right'caption='[[6n8y]], [[Resolution|resolution]] 1.55Å' scene=''> | | <StructureSection load='6n8y' size='340' side='right'caption='[[6n8y]], [[Resolution|resolution]] 1.55Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[6n8y]] is a 1 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=6N8Y OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6N8Y FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6n8y]] is a 1 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=6N8Y OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6N8Y FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=KFY:9-[(2E)-but-2-en-1-yl]-8-[(3,4,5-trimethoxyphenyl)methyl]-9H-purin-6-amine'>KFY</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]] 1.553908Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">HSP90AB1, HSP90B, HSPC2, HSPCB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=KFY:9-[(2E)-but-2-en-1-yl]-8-[(3,4,5-trimethoxyphenyl)methyl]-9H-purin-6-amine'>KFY</scene></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=6n8y FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6n8y OCA], [http://pdbe.org/6n8y PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6n8y RCSB], [http://www.ebi.ac.uk/pdbsum/6n8y PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6n8y ProSAT]</span></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=6n8y FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6n8y OCA], [https://pdbe.org/6n8y PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6n8y RCSB], [https://www.ebi.ac.uk/pdbsum/6n8y PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6n8y ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/HS90B_HUMAN HS90B_HUMAN]] Molecular chaperone that promotes the maturation, structural maintenance and proper regulation of specific target proteins involved for instance in cell cycle control and signal transduction. Undergoes a functional cycle that is linked to its ATPase activity. This cycle probably induces conformational changes in the client proteins, thereby causing their activation. Interacts dynamically with various co-chaperones that modulate its substrate recognition, ATPase cycle and chaperone function.<ref>PMID:16478993</ref> <ref>PMID:19696785</ref> | + | [https://www.uniprot.org/uniprot/HS90B_HUMAN HS90B_HUMAN] Molecular chaperone that promotes the maturation, structural maintenance and proper regulation of specific target proteins involved for instance in cell cycle control and signal transduction. Undergoes a functional cycle that is linked to its ATPase activity. This cycle probably induces conformational changes in the client proteins, thereby causing their activation. Interacts dynamically with various co-chaperones that modulate its substrate recognition, ATPase cycle and chaperone function.<ref>PMID:16478993</ref> <ref>PMID:19696785</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Human]] | + | [[Category: Homo sapiens]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Gewirth, D T]] | + | [[Category: Gewirth DT]] |
| - | [[Category: Huck, J D]] | + | [[Category: Huck JD]] |
| - | [[Category: Que, N L.S]] | + | [[Category: Que NLS]] |
| - | [[Category: Cancer]]
| + | |
| - | [[Category: Chaperone]]
| + | |
| - | [[Category: Chaperone-chaperone inhibitor complex]]
| + | |
| - | [[Category: Cytosol]]
| + | |
| - | [[Category: Hsp90]]
| + | |
| - | [[Category: Inhibitor]]
| + | |
| Structural highlights
Function
HS90B_HUMAN Molecular chaperone that promotes the maturation, structural maintenance and proper regulation of specific target proteins involved for instance in cell cycle control and signal transduction. Undergoes a functional cycle that is linked to its ATPase activity. This cycle probably induces conformational changes in the client proteins, thereby causing their activation. Interacts dynamically with various co-chaperones that modulate its substrate recognition, ATPase cycle and chaperone function.[1] [2]
Publication Abstract from PubMed
Hsp90alpha and Hsp90beta are implicated in a number of cancers and neurodegenerative disorders but the lack of selective pharmacological probes confounds efforts to identify their individual roles. Here, we analyzed the binding of an Hsp90alpha-selective PU compound, PU-11-trans, to the two cytosolic paralogs. We determined the co-crystal structures of Hsp90alpha and Hsp90beta bound to PU-11-trans, as well as the structure of the apo Hsp90beta NTD. The two inhibitor-bound structures reveal that Ser52, a nonconserved residue in the ATP binding pocket in Hsp90alpha, provides additional stability to PU-11-trans through a water-mediated hydrogen-bonding network. Mutation of Ser52 to alanine, as found in Hsp90beta, alters the dissociation constant of Hsp90alpha for PU-11-trans to match that of Hsp90beta. Our results provide a structural explanation for the binding preference of PU inhibitors for Hsp90alpha and demonstrate that the single nonconserved residue in the ATP-binding pocket may be exploited for alpha/beta selectivity.
Structures of Hsp90alpha and Hsp90beta bound to a purine-scaffold inhibitor reveal an exploitable residue for drug selectivity.,Huck JD, Que NLS, Sharma S, Taldone T, Chiosis G, Gewirth DT Proteins. 2019 May 29. doi: 10.1002/prot.25750. PMID:31141217[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Chadli A, Graham JD, Abel MG, Jackson TA, Gordon DF, Wood WM, Felts SJ, Horwitz KB, Toft D. GCUNC-45 is a novel regulator for the progesterone receptor/hsp90 chaperoning pathway. Mol Cell Biol. 2006 Mar;26(5):1722-30. PMID:16478993 doi:http://dx.doi.org/26/5/1722
- ↑ Retzlaff M, Stahl M, Eberl HC, Lagleder S, Beck J, Kessler H, Buchner J. Hsp90 is regulated by a switch point in the C-terminal domain. EMBO Rep. 2009 Oct;10(10):1147-53. Epub 2009 Aug 21. PMID:19696785 doi:http://dx.doi.org/embor2009153
- ↑ Huck JD, Que NLS, Sharma S, Taldone T, Chiosis G, Gewirth DT. Structures of Hsp90alpha and Hsp90beta bound to a purine-scaffold inhibitor reveal an exploitable residue for drug selectivity. Proteins. 2019 May 29. doi: 10.1002/prot.25750. PMID:31141217 doi:http://dx.doi.org/10.1002/prot.25750
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