5mks

From Proteopedia

(Difference between revisions)

Revision as of 09:38, 11 March 2017

HSP72-NBD bound to compound TCI 8 - Tyr15 in down-conformation

Structural highlights

5mks is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
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-inducible molecular chaperone, HSP72, is an important therapeutic target in oncology, but inhibiting this protein with small molecules has proven particularly challenging. Validating HSP72 inhibitors in cells is difficult owing to competition with the high affinity and abundance of its endogenous nucleotide substrates. We hypothesized this could be overcome using a cysteine-targeted irreversible inhibitor. Using rational design, we adapted a validated 8-N-benzyladenosine ligand for covalent bond formation and confirmed targeted irreversible inhibition. However, no cysteine in the protein was modified; instead, we demonstrate that lysine-56 is the key nucleophilic residue. Targeting this lysine could lead to a new design paradigm for HSP72 chemical probes and drugs.

An Irreversible Inhibitor of HSP72 that Unexpectedly Targets Lysine-56.,Pettinger J, Le Bihan YV, Widya M, van Montfort RL, Jones K, Cheeseman MD Angew Chem Int Ed Engl. 2017 Feb 22. doi: 10.1002/anie.201611907. PMID:28225177^[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
↑ Pettinger J, Le Bihan YV, Widya M, van Montfort RL, Jones K, Cheeseman MD. An Irreversible Inhibitor of HSP72 that Unexpectedly Targets Lysine-56. Angew Chem Int Ed Engl. 2017 Feb 22. doi: 10.1002/anie.201611907. PMID:28225177 doi:http://dx.doi.org/10.1002/anie.201611907

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

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

@@ Line 1: / Line 1: @@
-'''Unreleased structure'''
-The entry 5mks is ON HOLD  until Paper Publication
+==HSP72-NBD bound to compound TCI 8 - Tyr15 in down-conformation==
+<StructureSection load='5mks' size='340' side='right' caption='[[5mks]], [[Resolution|resolution]] 1.99&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[5mks]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5MKS OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5MKS FirstGlance]. <br>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=TI8:3-[(2~{R},3~{S},4~{R},5~{R})-5-[6-AZANYL-8-[(4-CHLOROPHENYL)METHYLAMINO]PURIN-9-YL]-3,4-BIS(OXIDANYL)OXOLAN-2-YL]PROPYL+PROP-2-ENOATE'>TI8</scene></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=5mks FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5mks OCA], [http://pdbe.org/5mks PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5mks RCSB], [http://www.ebi.ac.uk/pdbsum/5mks PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5mks ProSAT]</span></td></tr>
+</table>
+== Function ==
+[[http://www.uniprot.org/uniprot/HS71A_HUMAN 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).<ref>PMID:16537599</ref> <ref>PMID:22528486</ref> <ref>PMID:23973223</ref>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+The stress-inducible molecular chaperone, HSP72, is an important therapeutic target in oncology, but inhibiting this protein with small molecules has proven particularly challenging. Validating HSP72 inhibitors in cells is difficult owing to competition with the high affinity and abundance of its endogenous nucleotide substrates. We hypothesized this could be overcome using a cysteine-targeted irreversible inhibitor. Using rational design, we adapted a validated 8-N-benzyladenosine ligand for covalent bond formation and confirmed targeted irreversible inhibition. However, no cysteine in the protein was modified; instead, we demonstrate that lysine-56 is the key nucleophilic residue. Targeting this lysine could lead to a new design paradigm for HSP72 chemical probes and drugs.
-Authors: Pettinger, J., Westwood, I.M., Cronin, N., Le Bihan, Y.-V., Van Montfort, R.L.M.
+An Irreversible Inhibitor of HSP72 that Unexpectedly Targets Lysine-56.,Pettinger J, Le Bihan YV, Widya M, van Montfort RL, Jones K, Cheeseman MD Angew Chem Int Ed Engl. 2017 Feb 22. doi: 10.1002/anie.201611907. PMID:28225177<ref>PMID:28225177</ref>
-Description: HSP72-NBD bound to compound TCI 8 -Tyr15 in down-conformation
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-[[Category: Unreleased Structures]]
+</div>
-[[Category: Pettinger, J]]
+<div class="pdbe-citations 5mks" style="background-color:#fffaf0;"></div>
-[[Category: Van Montfort, R.L.M]]
+== References ==
-[[Category: Westwood, I.M]]
+<references/>
+__TOC__
+</StructureSection>
+[[Category: Bihan, Y V.Le]]
 [[Category: Cronin, N]]
-[[Category: Le Bihan, Y.-V]]
+[[Category: Montfort, R L.M Van]]
+[[Category: Pettinger, J]]
+[[Category: Westwood, I M]]
+[[Category: Chaperone]]
+[[Category: Irreversible inhibitor]]
+[[Category: Lysine modification]]

5mks

From Proteopedia

Revision as of 09:38, 11 March 2017

HSP72-NBD bound to compound TCI 8 - Tyr15 in down-conformation

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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