5xi9

From Proteopedia

(Difference between revisions)

Revision as of 06:50, 14 October 2020

Solution structure for human HSP70 substrate binding domain

Structural highlights

5xi9 is a 1 chain structure. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	5xir
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[HS71A_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] ^[3]

Publication Abstract from PubMed

The stress-induced 70 kDa heat shock protein (Hsp70) functions as a molecular chaperone to maintain protein homeostasis. Hsp70 contains an N-terminal ATPase domain (NBD) and a C-terminal substrate-binding domain (SBD). The SBD is divided into the beta subdomain containing the substrate-binding site (betaSBD) and the alpha-helical subdomain (alphaLid) that covers the betaSBD. In this report, the solution structures of two different forms of the SBD from human Hsp70 were solved. One structure shows the alphaLid bound to the substrate-binding site intramolecularly, whereas this intramolecular binding mode is absent in the other structure solved. Structural comparison of the two SBDs from Hsp70 revealed that client-peptide binding rearranges residues at the interdomain contact site, which impairs interdomain contact between the SBD and the NBD. Peptide binding also disrupted the inter-subdomain interaction connecting the alphaLid to the betaSBD, which allows the binding of the alphaLid to the NBD. The results provide a mechanism for interdomain communication upon substrate binding from the SBD to the NBD via the lynchpin site in the betaSBD of human Hsp70. In comparison to the bacterial ortholog, DnaK, some remarkable differences in the allosteric signal propagation among residues within the Hsp70 SBD exist.

Substrate Binding Switches the Conformation at the Lynchpin Site in the Substrate-Binding Domain of Human Hsp70 to Enable Allosteric Interdomain Communication.,Umehara K, Hoshikawa M, Tochio N, Tate SI Molecules. 2018 Feb 27;23(3). pii: molecules23030528. doi:, 10.3390/molecules23030528. PMID:29495458^[4]

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
↑ Liu X, Liu D, Qian D, Dai J, An Y, Jiang S, Stanley B, Yang J, Wang B, Liu X, Liu DX. Nucleophosmin (NPM1/B23) interacts with activating transcription factor 5 (ATF5) protein and promotes proteasome- and caspase-dependent ATF5 degradation in hepatocellular carcinoma cells. J Biol Chem. 2012 Jun 1;287(23):19599-609. doi: 10.1074/jbc.M112.363622. Epub, 2012 Apr 23. PMID:22528486 doi:http://dx.doi.org/10.1074/jbc.M112.363622
↑ 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
↑ Umehara K, Hoshikawa M, Tochio N, Tate SI. Substrate Binding Switches the Conformation at the Lynchpin Site in the Substrate-Binding Domain of Human Hsp70 to Enable Allosteric Interdomain Communication. Molecules. 2018 Feb 27;23(3). pii: molecules23030528. doi:, 10.3390/molecules23030528. PMID:29495458 doi:http://dx.doi.org/10.3390/molecules23030528

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5xi9"

@@ Line 1: / Line 1: @@
 ==Solution structure for human HSP70 substrate binding domain==
-<StructureSection load='5xi9' size='340' side='right' caption='[[5xi9]], [[NMR_Ensembles_of_Models | 10 NMR models]]' scene=''>
+<StructureSection load='5xi9' size='340' side='right'caption='[[5xi9]], [[NMR_Ensembles_of_Models | 10 NMR models]]' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5xi9]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5XI9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5XI9 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5xi9]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5XI9 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5XI9 FirstGlance]. <br>
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5xir|5xir]]</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=5xi9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5xi9 OCA], [http://pdbe.org/5xi9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5xi9 RCSB], [http://www.ebi.ac.uk/pdbsum/5xi9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5xi9 ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=5xi9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5xi9 OCA], [http://pdbe.org/5xi9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5xi9 RCSB], [http://www.ebi.ac.uk/pdbsum/5xi9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5xi9 ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 18: / Line 18: @@
 </div>
 <div class="pdbe-citations 5xi9" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Heat Shock Protein structures|Heat Shock Protein structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Large Structures]]
 [[Category: Hoshikawa, M]]
 [[Category: Tate, S]]

5xi9

From Proteopedia

Revision as of 06:50, 14 October 2020

Solution structure for human HSP70 substrate binding domain

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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