2qxl

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[[Image:2qxl.jpg|left|200px]]<br /><applet load="2qxl" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="2qxl, resolution 2.410&Aring;" />
 
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'''Crystal Structure Analysis of Sse1, a yeast Hsp110'''<br />
 
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==Overview==
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==Crystal Structure Analysis of Sse1, a yeast Hsp110==
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Classic Hsp70 chaperones assist in diverse processes of protein folding and translocation, and Hsp110s had seemed by sequence to be distant relatives within an Hsp70 superfamily. The 2.4 A resolution structure of Sse1 with ATP shows that Hsp110s are indeed Hsp70 relatives, and it provides insight into allosteric coupling between sites for ATP and polypeptide-substrate binding in Hsp70s. Subdomain structures are similar in intact Sse1(ATP) and in the separate Hsp70 domains, but conformational dispositions are radically different. Interfaces between Sse1 domains are extensive, intimate, and conservative in sequence with Hsp70s. We propose that Sse1(ATP) may be an evolutionary vestige of the Hsp70(ATP) state, and an analysis of 64 mutant variants in Sse1 and three Hsp70 homologs supports this hypothesis. An atomic-level understanding of Hsp70 communication between ATP and substrate-binding domains follows. Requirements on Sse1 for yeast viability are in keeping with the distinct function of Hsp110s as nucleotide exchange factors.
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<StructureSection load='2qxl' size='340' side='right'caption='[[2qxl]], [[Resolution|resolution]] 2.41&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2qxl]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2QXL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2QXL FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.41&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2qxl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2qxl OCA], [https://pdbe.org/2qxl PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2qxl RCSB], [https://www.ebi.ac.uk/pdbsum/2qxl PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2qxl ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/HSP7F_YEAST HSP7F_YEAST] Has a calcium-dependent calmodulin-binding activity. Required for normal growth at various temperatures.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/qx/2qxl_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2qxl ConSurf].
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<div style="clear:both"></div>
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==About this Structure==
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==See Also==
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2QXL is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae] with <scene name='pdbligand=MG:'>MG</scene>, <scene name='pdbligand=K:'>K</scene> and <scene name='pdbligand=ATP:'>ATP</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2QXL OCA].
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*[[Heat Shock Protein structures|Heat Shock Protein structures]]
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__TOC__
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==Reference==
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</StructureSection>
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Insights into hsp70 chaperone activity from a crystal structure of the yeast Hsp110 Sse1., Liu Q, Hendrickson WA, Cell. 2007 Oct 5;131(1):106-20. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=17923091 17923091]
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[[Category: Large Structures]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]
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[[Category: Single protein]]
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[[Category: Hendrickson WA]]
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[[Category: Hendrickson, W A.]]
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[[Category: Liu Q]]
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[[Category: Liu, Q.]]
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[[Category: ATP]]
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[[Category: K]]
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[[Category: MG]]
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[[Category: acetylation]]
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[[Category: atp state]]
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[[Category: atp-binding]]
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[[Category: calmodulin-binding]]
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[[Category: cytoplasm]]
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[[Category: hsp110]]
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[[Category: hsp70]]
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[[Category: molecular chaperone]]
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[[Category: nucleotide-binding]]
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[[Category: phosphorylation]]
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[[Category: stress response]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 18:43:08 2008''
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Current revision

Crystal Structure Analysis of Sse1, a yeast Hsp110

PDB ID 2qxl

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