4i5l
From Proteopedia
(Difference between revisions)
| Line 1: | Line 1: | ||
| - | + | ==Structural mechanism of trimeric PP2A holoenzyme involving PR70: insight for Cdc6 dephosphorylation== | |
| - | + | <StructureSection load='4i5l' size='340' side='right' caption='[[4i5l]], [[Resolution|resolution]] 2.43Å' scene=''> | |
| - | + | == Structural highlights == | |
| + | <table><tr><td colspan='2'>[[4i5l]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Microcystis_aeruginosa Microcystis aeruginosa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4I5L OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4I5L FirstGlance]. <br> | ||
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MLI:MALONATE+ION'>MLI</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene></td></tr> | ||
| + | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=1ZN:(2S,3S,4E,6E,8S,9S)-3-AMINO-9-METHOXY-2,6,8-TRIMETHYL-10-PHENYLDECA-4,6-DIENOIC+ACID'>1ZN</scene>, <scene name='pdbligand=ACB:3-METHYL-BETA-D-ASPARTIC+ACID'>ACB</scene>, <scene name='pdbligand=DAL:D-ALANINE'>DAL</scene>, <scene name='pdbligand=FGA:GAMMA-D-GLUTAMIC+ACID'>FGA</scene>, <scene name='pdbligand=MAA:N-METHYL-L-ALANINE'>MAA</scene></td></tr> | ||
| + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3p71|3p71]], [[2npp|2npp]], [[2ie3|2ie3]], [[4i5n|4i5n]], [[4i5j|4i5j]], [[4i5k|4i5k]]</td></tr> | ||
| + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PPP2R1A ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]), PPP2R3B, PPP2R3L ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]), PPP2CA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr> | ||
| + | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Phosphoprotein_phosphatase Phosphoprotein phosphatase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.3.16 3.1.3.16] </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=4i5l FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4i5l OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4i5l RCSB], [http://www.ebi.ac.uk/pdbsum/4i5l PDBsum]</span></td></tr> | ||
| + | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | The B''/PR72 family of protein phosphatase 2A (PP2A) is an important PP2A family involved in diverse cellular processes, and uniquely regulated by calcium binding to the regulatory subunit. The PR70 subunit in this family interacts with cell division control 6 (Cdc6), a cell cycle regulator important for control of DNA replication. Here, we report crystal structures of the isolated PR72 and the trimeric PR70 holoenzyme at a resolution of 2.1 and 2.4 A, respectively, and in vitro characterization of Cdc6 dephosphorylation. The holoenzyme structure reveals that one of the PR70 calcium-binding motifs directly contacts the scaffold subunit, resulting in the most compact scaffold subunit conformation among all PP2A holoenzymes. PR70 also binds distinctively to the catalytic subunit near the active site, which is required for PR70 to enhance phosphatase activity toward Cdc6. Our studies provide a structural basis for unique regulation of B''/PR72 holoenzymes by calcium ions, and suggest the mechanisms for precise control of substrate specificity among PP2A holoenzymes. | ||
| - | + | Structure of the Ca(2+)-dependent PP2A heterotrimer and insights into Cdc6 dephosphorylation.,Wlodarchak N, Guo F, Satyshur KA, Jiang L, Jeffrey PD, Sun T, Stanevich V, Mumby MC, Xing Y Cell Res. 2013 Jul;23(7):931-46. doi: 10.1038/cr.2013.77. Epub 2013 Jun 11. PMID:23752926<ref>PMID:23752926</ref> | |
| - | + | ||
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| - | == | + | ==See Also== |
| - | + | *[[Serine/threonine protein phosphatase|Serine/threonine protein phosphatase]] | |
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Microcystis aeruginosa]] | [[Category: Microcystis aeruginosa]] | ||
[[Category: Phosphoprotein phosphatase]] | [[Category: Phosphoprotein phosphatase]] | ||
| - | [[Category: Guo, F | + | [[Category: Guo, F]] |
| - | [[Category: Satyshur, K A | + | [[Category: Satyshur, K A]] |
| - | [[Category: Wlodarchak, N | + | [[Category: Wlodarchak, N]] |
| - | [[Category: Xing, Y | + | [[Category: Xing, Y]] |
[[Category: Ef hand]] | [[Category: Ef hand]] | ||
[[Category: Hydrolase-toxin complex]] | [[Category: Hydrolase-toxin complex]] | ||
[[Category: Phosphatase]] | [[Category: Phosphatase]] | ||
Revision as of 12:03, 21 December 2014
Structural mechanism of trimeric PP2A holoenzyme involving PR70: insight for Cdc6 dephosphorylation
| |||||||||||
