4yl9: Difference between revisions
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<StructureSection load='4yl9' size='340' side='right'caption='[[4yl9]], [[Resolution|resolution]] 2.35Å' scene=''> | <StructureSection load='4yl9' size='340' side='right'caption='[[4yl9]], [[Resolution|resolution]] 2.35Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4yl9]] is a 4 chain structure with sequence from [ | <table><tr><td colspan='2'>[[4yl9]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharolobus_solfataricus_98/2 Saccharolobus solfataricus 98/2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4YL9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4YL9 FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene></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=4yl9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4yl9 OCA], [https://pdbe.org/4yl9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4yl9 RCSB], [https://www.ebi.ac.uk/pdbsum/4yl9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4yl9 ProSAT]</span></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | |||
</table> | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/D0KNS6_SACS9 D0KNS6_SACS9] | |||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
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==See Also== | ==See Also== | ||
*[[Heat Shock | *[[Heat Shock Protein structures|Heat Shock Protein structures]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: | [[Category: Saccharolobus solfataricus 98/2]] | ||
[[Category: Chen | [[Category: Chen JY]] | ||
[[Category: Liu | [[Category: Liu L]] | ||
[[Category: Yun | [[Category: Yun CH]] | ||
Revision as of 11:17, 3 May 2023
Crystal Structure of wild-type of hsp14.1 from Sulfolobus solfatataricus P2Crystal Structure of wild-type of hsp14.1 from Sulfolobus solfatataricus P2
Structural highlights
FunctionPublication Abstract from PubMedSmall heat-shock proteins (sHsps) maintain cellular homeostasis by binding to denatured client proteins to prevent aggregation. Numerous studies indicate that the N-terminal domain (NTD) of sHsps is responsible for binding to client proteins, but the binding mechanism and chaperone activity regulation remain elusive. Here, we report the crystal structures of the wild-type and mutants of an sHsp from Sulfolobus solfataricus representing the inactive and active state of this protein, respectively. All three structures reveal well-defined NTD, but their conformations are remarkably different. The mutant NTDs show disrupted helices presenting a reformed hydrophobic surface compatible with recognizing client proteins. Our functional data show that mutating key hydrophobic residues in this region drastically altered the chaperone activity of this sHsp. These data suggest a new model in which a molecular switch located in NTD facilitates conformational changes for client protein binding. Active-State Structures of a Small Heat-Shock Protein Revealed a Molecular Switch for Chaperone Function.,Liu L, Chen JY, Yang B, Wang FH, Wang YH, Yun CH Structure. 2015 Nov 3;23(11):2066-75. doi: 10.1016/j.str.2015.08.015. Epub 2015, Oct 1. PMID:26439766[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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