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{{STRUCTURE_3ef0|  PDB=3ef0  |  SCENE=  }}
===The Structure of Fcp1, an essential RNA polymerase II CTD phosphatase===
{{ABSTRACT_PUBMED_19026779}}


==Function==
==The Structure of Fcp1, an essential RNA polymerase II CTD phosphatase==
[[http://www.uniprot.org/uniprot/FCP1_SCHPO FCP1_SCHPO]] Processively dephosphorylates 'Ser-2' and 'Ser-5' of the heptad repeats YSPTSPS in the C-terminal domain of the largest RNA polymerase II subunit. This promotes the activity of RNA polymerase II.  
<StructureSection load='3ef0' size='340' side='right'caption='[[3ef0]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3ef0]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Schizosaccharomyces_pombe Schizosaccharomyces pombe]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3EF0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3EF0 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]] 2.1&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ALF:TETRAFLUOROALUMINATE+ION'>ALF</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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=3ef0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ef0 OCA], [https://pdbe.org/3ef0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ef0 RCSB], [https://www.ebi.ac.uk/pdbsum/3ef0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ef0 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/FCP1_SCHPO FCP1_SCHPO] Processively dephosphorylates 'Ser-2' and 'Ser-5' of the heptad repeats YSPTSPS in the C-terminal domain of the largest RNA polymerase II subunit. This promotes the activity of RNA polymerase II.
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ef/3ef0_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3ef0 ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Kinases and phosphatases regulate mRNA synthesis and processing by phosphorylating and dephosphorylating the C-terminal domain (CTD) of the largest subunit of RNA polymerase II. Fcp1 is an essential CTD phosphatase that preferentially hydrolyzes Ser2-PO(4) of the tandem YSPTSPS CTD heptad array. Fcp1 crystal structures were captured at two stages of the reaction pathway: a Mg-BeF(3) complex that mimics the aspartylphosphate intermediate and a Mg-AlF(4)(-) complex that mimics the transition state of the hydrolysis step. Fcp1 is a Y-shaped protein composed of an acylphosphatase domain located at the base of a deep canyon formed by flanking modules that are missing from the small CTD phosphatase (SCP) clade: an Fcp1-specific helical domain and a C-terminal BRCA1 C-terminal (BRCT) domain. The structure and mutational analysis reveals that Fcp1 and Scp1 (a Ser5-selective phosphatase) adopt different CTD-binding modes; we surmise the CTD threads through the Fcp1 canyon to access the active site.


==About this Structure==
The structure of Fcp1, an essential RNA polymerase II CTD phosphatase.,Ghosh A, Shuman S, Lima CD Mol Cell. 2008 Nov 21;32(4):478-90. PMID:19026779<ref>PMID:19026779</ref>
[[3ef0]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Schizosaccharomyces_pombe Schizosaccharomyces pombe]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3EF0 OCA].


==Reference==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
<ref group="xtra">PMID:019026779</ref><references group="xtra"/><references/>
</div>
[[Category: Phosphoprotein phosphatase]]
<div class="pdbe-citations 3ef0" style="background-color:#fffaf0;"></div>
 
==See Also==
*[[RNA polymerase 3D structures|RNA polymerase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Schizosaccharomyces pombe]]
[[Category: Schizosaccharomyces pombe]]
[[Category: Ghosh, A.]]
[[Category: Ghosh A]]
[[Category: Lima, C D.]]
[[Category: Lima CD]]
[[Category: Alf4]]
[[Category: Brct]]
[[Category: Cobalt]]
[[Category: Ctd]]
[[Category: Fcph]]
[[Category: Hydrolase]]
[[Category: Magnesium]]
[[Category: Manganese]]
[[Category: Metal-binding]]
[[Category: Nucleus]]
[[Category: Phosphatase]]
[[Category: Protein phosphatase]]
[[Category: Transition state analog]]
Retrieved from "https://proteopedia.org/3ef0"