5k6s: Difference between revisions

Revision as of 08:54, 18 December 2019

The structure of the PP2A B56 subunit BubR1 complex

Structural highlights

5k6s is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
NonStd Res:	SEP
Gene:	PPP2R5C, KIAA0044 (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[2A5G_HUMAN] The B regulatory subunit might modulate substrate selectivity and catalytic activity, and also might direct the localization of the catalytic enzyme to a particular subcellular compartment. The PP2A-PPP2R5C holoenzyme may specifically dephosphorylate and activate TP53 and play a role in DNA damage-induced inhibition of cell proliferation. PP2A-PPP2R5C may also regulate the ERK signaling pathway through ERK dephosphorylation.^[1] ^[2]

Publication Abstract from PubMed

Specific interactions between proteins govern essential physiological processes including signaling. Many enzymes, especially the family of serine/threonine phosphatases (PSPs: PP1, PP2A, and PP2B/calcineurin/CN), recruit substrates and regulatory proteins by binding short linear motifs (SLiMs), short sequences found within intrinsically disordered regions that mediate specific protein-protein interactions. While tremendous progress had been made in identifying where and how SLiMs bind PSPs, especially PP1 and CN, essentially nothing is known about how SLiMs bind PP2A, a validated cancer drug target. Here we describe three structures of a PP2A-SLiM interaction (B56:pS-RepoMan, B56:pS-BubR1, and B56:pSpS-BubR1), show that this PP2A-specific SLiM is defined as LSPIxE, and then use these data to discover scores of likely PP2A regulators and substrates. Together, these data provide a powerful approach not only for dissecting PP2A interaction networks in cells but also for targeting PP2A diseases, such as cancer.

Expanding the PP2A Interactome by Defining a B56-Specific SLiM.,Wang X, Bajaj R, Bollen M, Peti W, Page R Structure. 2016 Dec 6;24(12):2174-2181. doi: 10.1016/j.str.2016.09.010. Epub 2016, Oct 27. PMID:27998540^[3]

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

References

↑ Letourneux C, Rocher G, Porteu F. B56-containing PP2A dephosphorylate ERK and their activity is controlled by the early gene IEX-1 and ERK. EMBO J. 2006 Feb 22;25(4):727-38. Epub 2006 Feb 2. PMID:16456541 doi:https://dx.doi.org/10.1038/sj.emboj.7600980
↑ Li HH, Cai X, Shouse GP, Piluso LG, Liu X. A specific PP2A regulatory subunit, B56gamma, mediates DNA damage-induced dephosphorylation of p53 at Thr55. EMBO J. 2007 Jan 24;26(2):402-11. PMID:17245430 doi:https://dx.doi.org/10.1038/sj.emboj.7601519
↑ Wang X, Bajaj R, Bollen M, Peti W, Page R. Expanding the PP2A Interactome by Defining a B56-Specific SLiM. Structure. 2016 Dec 6;24(12):2174-2181. doi: 10.1016/j.str.2016.09.010. Epub 2016, Oct 27. PMID:27998540 doi:https://dx.doi.org/10.1016/j.str.2016.09.010

Proteopedia Page Contributors and Editors (what is this?)

OCA

[1] Letourneux C, Rocher G, Porteu F. B56-containing PP2A dephosphorylate ERK and their activity is controlled by the early gene IEX-1 and ERK. EMBO J. 2006 Feb 22;25(4):727-38. Epub 2006 Feb 2. PMID:16456541 doi:https://dx.doi.org/10.1038/sj.emboj.7600980

[2] Li HH, Cai X, Shouse GP, Piluso LG, Liu X. A specific PP2A regulatory subunit, B56gamma, mediates DNA damage-induced dephosphorylation of p53 at Thr55. EMBO J. 2007 Jan 24;26(2):402-11. PMID:17245430 doi:https://dx.doi.org/10.1038/sj.emboj.7601519

[3] Wang X, Bajaj R, Bollen M, Peti W, Page R. Expanding the PP2A Interactome by Defining a B56-Specific SLiM. Structure. 2016 Dec 6;24(12):2174-2181. doi: 10.1016/j.str.2016.09.010. Epub 2016, Oct 27. PMID:27998540 doi:https://dx.doi.org/10.1016/j.str.2016.09.010

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@@ Line 1: / Line 1: @@
 ==The structure of the PP2A B56 subunit BubR1 complex==
-<StructureSection load='5k6s' size='340' side='right' caption='[[5k6s]], [[Resolution|resolution]] 2.79&Aring;' scene=''>
+<StructureSection load='5k6s' size='340' side='right'caption='[[5k6s]], [[Resolution|resolution]] 2.79&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5k6s]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5K6S OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5K6S FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5k6s]] is a 2 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=5K6S OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5K6S FirstGlance]. <br>
 </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=SEP:PHOSPHOSERINE'>SEP</scene></td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PPP2R5C, KIAA0044 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=5k6s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5k6s OCA], [http://pdbe.org/5k6s PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5k6s RCSB], [http://www.ebi.ac.uk/pdbsum/5k6s PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5k6s ProSAT]</span></td></tr>
 </table>
@@ Line 18: / Line 19: @@
 </div>
 <div class="pdbe-citations 5k6s" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Protein phosphatase 3D structures|Protein phosphatase 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Human]]
+[[Category: Large Structures]]
 [[Category: Bajaj, R]]
 [[Category: Page, R]]

5k6s: Difference between revisions

Revision as of 08:54, 18 December 2019

The structure of the PP2A B56 subunit BubR1 complex

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

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