2iop

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[[Image:2iop.gif|left|200px]]
 
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{{Structure
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==Crystal Structure of Full-length HtpG, the Escherichia coli Hsp90, Bound to ADP==
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|PDB= 2iop |SIZE=350|CAPTION= <scene name='initialview01'>2iop</scene>, resolution 3.55&Aring;
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<StructureSection load='2iop' size='340' side='right'caption='[[2iop]], [[Resolution|resolution]] 3.55&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=ADP:ADENOSINE-5&#39;-DIPHOSPHATE'>ADP</scene>
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<table><tr><td colspan='2'>[[2iop]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IOP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2IOP FirstGlance]. <br>
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|ACTIVITY=
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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]] 3.55&#8491;</td></tr>
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|GENE= htpG ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli])
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene></td></tr>
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}}
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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=2iop FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2iop OCA], [https://pdbe.org/2iop PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2iop RCSB], [https://www.ebi.ac.uk/pdbsum/2iop PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2iop ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/HTPG_ECOLI HTPG_ECOLI] Molecular chaperone. Has ATPase activity.[HAMAP-Rule:MF_00505]
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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/io/2iop_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=2iop ConSurf].
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<div style="clear:both"></div>
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'''Crystal Structure of Full-length HtpG, the Escherichia coli Hsp90, Bound to ADP'''
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==See Also==
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*[[Heat Shock Protein structures|Heat Shock Protein structures]]
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__TOC__
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==Overview==
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</StructureSection>
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In eukaryotes, the ubiquitous and abundant members of the 90 kilodalton heat-shock protein (hsp90) chaperone family facilitate the folding and conformational changes of a broad array of proteins important in cell signaling, proliferation, and survival. Here we describe the effects of nucleotides on the structure of full-length HtpG, the Escherichia coli hsp90 ortholog. By electron microscopy, the nucleotide-free, AMPPNP bound, and ADP bound states of HtpG adopt completely distinct conformations. Structural characterization of nucleotide-free and ADP bound HtpG was extended to higher resolution by X-ray crystallography. In the absence of nucleotide, HtpG exhibits an "open" conformation in which the three domains of each monomer present hydrophobic elements into the large cleft formed by the dimer. By contrast, ADP binding drives dramatic conformational changes that allow these hydrophobic elements to converge and shield each other from solvent, suggesting a mechanism by which nucleotides could control client protein binding and release.
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==About this Structure==
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2IOP is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IOP OCA].
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==Reference==
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Structural Analysis of E. coli hsp90 reveals dramatic nucleotide-dependent conformational rearrangements., Shiau AK, Harris SF, Southworth DR, Agard DA, Cell. 2006 Oct 20;127(2):329-40. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17055434 17055434]
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[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Agard, D A.]]
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[[Category: Agard DA]]
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[[Category: Harris, S F.]]
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[[Category: Harris SF]]
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[[Category: Shiau, A K.]]
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[[Category: Shiau AK]]
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[[Category: ADP]]
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[[Category: chaperone]]
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[[Category: heat shock protein]]
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[[Category: hsp90]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 23 15:21:52 2008''
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Current revision

Crystal Structure of Full-length HtpG, the Escherichia coli Hsp90, Bound to ADP

PDB ID 2iop

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