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3qfu

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==Crystal structure of Yeast Hsp70 (Bip/kar2) complexed with ADP==
==Crystal structure of Yeast Hsp70 (Bip/kar2) complexed with ADP==
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<StructureSection load='3qfu' size='340' side='right' caption='[[3qfu]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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<StructureSection load='3qfu' size='340' side='right'caption='[[3qfu]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[3qfu]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_18824 Atcc 18824]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3QFU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3QFU FirstGlance]. <br>
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<table><tr><td colspan='2'>[[3qfu]] is a 1 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=3QFU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3QFU FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr>
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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]] 1.8&#8491;</td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3qfp|3qfp]], [[3qml|3qml]]</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=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">KAR2, GRP78, SSD1, YJL034W, J1248 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 ATCC 18824])</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=3qfu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3qfu OCA], [https://pdbe.org/3qfu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3qfu RCSB], [https://www.ebi.ac.uk/pdbsum/3qfu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3qfu ProSAT]</span></td></tr>
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<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=3qfu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3qfu OCA], [http://pdbe.org/3qfu PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3qfu RCSB], [http://www.ebi.ac.uk/pdbsum/3qfu PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3qfu ProSAT]</span></td></tr>
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</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/GRP78_YEAST GRP78_YEAST]] Probably plays a role in facilitating the assembly of multimeric protein complexes inside the ER. Is required for secretory polypeptide translocation. May physically associate with SEC63 protein in the endoplasmic reticulum and this interaction may be regulated by ATP hydrolysis.<ref>PMID:16002399</ref>
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[https://www.uniprot.org/uniprot/BIP_YEAST BIP_YEAST] Probably plays a role in facilitating the assembly of multimeric protein complexes inside the ER. Is required for secretory polypeptide translocation. May physically associate with SEC63 protein in the endoplasmic reticulum and this interaction may be regulated by ATP hydrolysis.<ref>PMID:16002399</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Sil1 functions as a nucleotide exchange factor (NEF) for Bip in eukaryotic cells. In order to understand how Sil1 functions as a NEF, we analyzed the crystal structure of the yeast Bip-Sil1 complex at a resolution of 2.3A. In the complex, the Sil1 molecule acts as a "molecular clamp" which binds to the IIb lobe of the Bip ATPase domain. Sil1 binding causes lobe IIb to rotate ~13.5 degrees away from the ADP-binding pocket and lobe Ib to rotate in the opposite direction for ~3.7 degrees . These conformational changes in Bip open up the nucleotide-binding pocket in the ATPase domain and simultaneously disrupt the hydrogen bonds between Bip and bound ADP, thus providing a mechanism for ADP release. We also demonstrate that Sil1 mutations that disrupt binding to the Bip ATPase domain abolish Sil1's ability to stimulate Bip ATPase activity.
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Structural analysis of the Sil1-Bip complex reveals how Sil1 functions as a nucleotide exchange factor.,Yan M, Li J, Sha B Biochem J. 2011 Jun 15. PMID:21675960<ref>PMID:21675960</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 3qfu" style="background-color:#fffaf0;"></div>
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== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Atcc 18824]]
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[[Category: Large Structures]]
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[[Category: Li, J Z]]
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[[Category: Saccharomyces cerevisiae]]
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[[Category: Sha, B D]]
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[[Category: Li JZ]]
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[[Category: Yan, M]]
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[[Category: Sha BD]]
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[[Category: Bip]]
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[[Category: Yan M]]
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[[Category: Chaperone]]
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[[Category: Hsp70]]
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[[Category: Kar2]]
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Current revision

Crystal structure of Yeast Hsp70 (Bip/kar2) complexed with ADP

PDB ID 3qfu

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