4mew: Difference between revisions
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''' | ==Structure of the core fragment of human PR70== | ||
<StructureSection load='4mew' size='340' side='right' caption='[[4mew]], [[Resolution|resolution]] 1.99Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4mew]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4MEW OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4MEW FirstGlance]. <br> | |||
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene><br> | |||
<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr> | |||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4mew FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4mew OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4mew RCSB], [http://www.ebi.ac.uk/pdbsum/4mew PDBsum]</span></td></tr> | |||
<table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Protein Phosphatase 2A (PP2A) is a major Ser/Thr phosphatase involved in the regulation of various cellular processes. PP2A assembles into diverse trimeric holoenzymes, which consist of a scaffolding (A) subunit, a catalytic (C) subunit and various regulatory (B) subunits. Here we report a 2.0 A crystal structure of the free B''/PR70 subunit and a SAXS model of an A/PR70 complex. The crystal structure of B''/PR70 reveals a two domain elongated structure with two Ca2+ binding EF-hands. Furthermore, we have characterized the interaction of both binding partner and their calcium dependency using biophysical techniques. Ca2+ biophysical studies with Circular Dichroism showed that the two EF-hands display different affinities to Ca2+. In the absence of the catalytic C-subunit, the scaffolding A-subunit remains highly mobile and flexible even in the presence of the B''/PR70 subunit as judged by SAXS. Isothermal Titration Calorimetry studies and SAXS data support that PR70 and the A-subunit have high affinity to each other. This study provides additional knowledge about the structural basis for the function of B'' containing holoenzymes. | |||
Structural and Biochemical Characterization of Human PR70 in Isolation and in Complex with the Scaffolding Subunit of Protein Phosphatase 2A.,Dovega R, Tsutakawa S, Quistgaard EM, Anandapadamanaban M, Low C, Nordlund P PLoS One. 2014 Jul 9;9(7):e101846. doi: 10.1371/journal.pone.0101846. eCollection, 2014. PMID:25007185<ref>PMID:25007185</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Anandapadamanaban, M.]] | |||
[[Category: Dovega, R B.]] | |||
[[Category: Low, C.]] | |||
[[Category: Nordlund, P.]] | |||
[[Category: Quistgaard, E M.]] | |||
[[Category: Tsutakawa, S.]] | |||
[[Category: Calcium binding]] | |||
[[Category: Cell cycle]] | |||
[[Category: Ef-hand]] | |||
[[Category: Hydrolase]] | |||
[[Category: Metal binding protein]] | |||
[[Category: Protein phosphatase]] |