2e8a

From Proteopedia

(Difference between revisions)

Revision as of 10:23, 11 September 2015

Crystal structure of the human Hsp70 ATPase domain in complex with AMP-PNP

Structural highlights

2e8a is a 1 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	2e88
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, TOPSAN

Function

[HS71B_HUMAN] In cooperation with other chaperones, Hsp70s stabilize preexistent proteins against aggregation and mediate the folding of newly translated polypeptides in the cytosol as well as within organelles. These chaperones participate in all these processes through their ability to recognize nonnative conformations of other proteins. They bind extended peptide segments with a net hydrophobic character exposed by polypeptides during translation and membrane translocation, or following stress-induced damage. In case of rotavirus A infection, serves as a post-attachment receptor for the virus to facilitate entry into the cell. Essential for STUB1-mediated ubiquitination and degradation of FOXP3 in regulatory T-cells (Treg) during inflammation (PubMed:23973223).^[1] ^[2]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The 70 kDa heat-shock proteins (Hsp70s) are highly conserved chaperones that are involved in several cellular processes, such as protein folding, disaggregation and translocation. In this study, the crystal structures of the human Hsp70 nucleotide-binding domain (NBD) fragment were determined in the nucleotide-free state and in complex with adenosine 5'-(beta,gamma-imido)triphosphate (AMPPNP). The structure of the nucleotide-free NBD fragment is similar to that of the AMPPNP-bound NBD fragment and is designated as the ;closed form'. In the nucleotide-free NBD fragment the closed form is intrinsically supported through interactions between Tyr15, Lys56 and Glu268 which connect subdomains IA, IB and IIB at the centre of the protein. Interaction with the substrate-binding domain (SBD) of Hsp70 or the BAG domain of BAG1 impairs this subdomain connection and triggers the rotation of subdomain IIA around a hydrophobic helix from subdomain IA. The subdomain rotation is limited by Asp199 and Asp206 from subdomain IIA and clearly defines the open form of the NBD. The open form is further stabilized by a new interaction between Gly230 from subdomain IIB and Ser340 from subdomain IIA. The structure of the NBD in the nucleotide-free state is determined by switching of the inter-subdomain interactions.

Direct inter-subdomain interactions switch between the closed and open forms of the Hsp70 nucleotide-binding domain in the nucleotide-free state.,Shida M, Arakawa A, Ishii R, Kishishita S, Takagi T, Kukimoto-Niino M, Sugano S, Tanaka A, Shirouzu M, Yokoyama S Acta Crystallogr D Biol Crystallogr. 2010 Mar;66(Pt 3):223-32. Epub 2010, Feb 12. PMID:20179333^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Perez-Vargas J, Romero P, Lopez S, Arias CF. The peptide-binding and ATPase domains of recombinant hsc70 are required to interact with rotavirus and reduce its infectivity. J Virol. 2006 Apr;80(7):3322-31. PMID:16537599 doi:http://dx.doi.org/80/7/3322
↑ Chen Z, Barbi J, Bu S, Yang HY, Li Z, Gao Y, Jinasena D, Fu J, Lin F, Chen C, Zhang J, Yu N, Li X, Shan Z, Nie J, Gao Z, Tian H, Li Y, Yao Z, Zheng Y, Park BV, Pan Z, Zhang J, Dang E, Li Z, Wang H, Luo W, Li L, Semenza GL, Zheng SG, Loser K, Tsun A, Greene MI, Pardoll DM, Pan F, Li B. The ubiquitin ligase Stub1 negatively modulates regulatory T cell suppressive activity by promoting degradation of the transcription factor Foxp3. Immunity. 2013 Aug 22;39(2):272-85. doi: 10.1016/j.immuni.2013.08.006. PMID:23973223 doi:http://dx.doi.org/10.1016/j.immuni.2013.08.006
↑ Shida M, Arakawa A, Ishii R, Kishishita S, Takagi T, Kukimoto-Niino M, Sugano S, Tanaka A, Shirouzu M, Yokoyama S. Direct inter-subdomain interactions switch between the closed and open forms of the Hsp70 nucleotide-binding domain in the nucleotide-free state. Acta Crystallogr D Biol Crystallogr. 2010 Mar;66(Pt 3):223-32. Epub 2010, Feb 12. PMID:20179333 doi:10.1107/S0907444909053979

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2e8a"

@@ Line 2: / Line 2: @@
 <StructureSection load='2e8a' size='340' side='right' caption='[[2e8a]], [[Resolution|resolution]] 1.77&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2e8a]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2E8A OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2E8A FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2e8a]] 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=2E8A OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2E8A FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ANP:PHOSPHOAMINOPHOSPHONIC+ACID-ADENYLATE+ESTER'>ANP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2e88|2e88]]</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=2e8a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2e8a OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2e8a RCSB], [http://www.ebi.ac.uk/pdbsum/2e8a PDBsum], [http://www.topsan.org/Proteins/RSGI/2e8a TOPSAN]</span></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=2e8a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2e8a OCA], [http://pdbe.org/2e8a PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2e8a RCSB], [http://www.ebi.ac.uk/pdbsum/2e8a PDBsum], [http://www.topsan.org/Proteins/RSGI/2e8a TOPSAN]</span></td></tr>
 </table>
+== Function ==
+[[http://www.uniprot.org/uniprot/HS71B_HUMAN HS71B_HUMAN]] In cooperation with other chaperones, Hsp70s stabilize preexistent proteins against aggregation and mediate the folding of newly translated polypeptides in the cytosol as well as within organelles. These chaperones participate in all these processes through their ability to recognize nonnative conformations of other proteins. They bind extended peptide segments with a net hydrophobic character exposed by polypeptides during translation and membrane translocation, or following stress-induced damage. In case of rotavirus A infection, serves as a post-attachment receptor for the virus to facilitate entry into the cell. Essential for STUB1-mediated ubiquitination and degradation of FOXP3 in regulatory T-cells (Treg) during inflammation (PubMed:23973223).<ref>PMID:16537599</ref> <ref>PMID:23973223</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 25: / Line 27: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 2e8a" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 32: / Line 35: @@
 __TOC__
 </StructureSection>
-[[Category: Homo sapiens]]
+[[Category: Human]]
 [[Category: Ishii, R]]
 [[Category: Kishishita, S]]

2e8a

From Proteopedia

Revision as of 10:23, 11 September 2015

Crystal structure of the human Hsp70 ATPase domain in complex with AMP-PNP

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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