4h3k: Difference between revisions

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'''Unreleased structure'''


The entry 4h3k is ON HOLD
==Crystal structure of a ternary complex of human symplekin NTD, human Ssu72 and a RNA polymerase II CTD peptide phosphorylated at Ser-2, Ser-5 and Ser-7==
<StructureSection load='4h3k' size='340' side='right'caption='[[4h3k]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4h3k]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4H3K OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4H3K FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=SEP:PHOSPHOSERINE'>SEP</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4h3k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4h3k OCA], [https://pdbe.org/4h3k PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4h3k RCSB], [https://www.ebi.ac.uk/pdbsum/4h3k PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4h3k ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/SYMPK_HUMAN SYMPK_HUMAN] Scaffold protein that functions as a component of a multimolecular complex involved in histone mRNA 3'-end processing. Specific component of the tight junction (TJ) plaque, but might not be an exclusively junctional component. May have a house-keeping rule. Is involved in pre-mRNA polyadenylation. Enhances SSU72 phosphatase activity.<ref>PMID:16230528</ref> <ref>PMID:20861839</ref>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Ssu72, an RNA polymerase II C-terminal domain (CTD) phospho-Ser5 (pSer5) phosphatase, was recently reported to have pSer7 phosphatase activity as well. We report here the crystal structure of a ternary complex of the N-terminal domain of human symplekin, human Ssu72, and a 10-mer pSer7 CTD peptide. Surprisingly, the peptide is bound in the Ssu72 active site with its backbone running in the opposite direction compared with a pSer5 peptide. The pSer7 phosphatase activity of Ssu72 is approximately 4000-fold lower than its pSer5 phosphatase activity toward a peptide substrate, consistent with the structural observations.


Authors: Tong, L., Xiang, K.
An unexpected binding mode for a Pol II CTD peptide phosphorylated at Ser7 in the active site of the CTD phosphatase Ssu72.,Xiang K, Manley JL, Tong L Genes Dev. 2012 Oct 15;26(20):2265-70. doi: 10.1101/gad.198853.112. PMID:23070812<ref>PMID:23070812</ref>


Description: Crystal structure of human symplekin and Ssu72 complex with a RNA polymerase II CTD peptide phosphorylated at Ser-2, Ser-5 and Ser-7
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4h3k" style="background-color:#fffaf0;"></div>
 
==See Also==
*[[Symplekin|Symplekin]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Tong L]]
[[Category: Xiang K]]
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