View source for 1it6

==CRYSTAL STRUCTURE OF THE COMPLEX BETWEEN CALYCULIN A AND THE CATALYTIC SUBUNIT OF PROTEIN PHOSPHATASE 1==
<StructureSection load='1it6' size='340' side='right' caption='[[1it6]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1it6]] 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=1IT6 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1IT6 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CYU:CALYCULIN+A'>CYU</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene></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=1it6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1it6 OCA], [http://pdbe.org/1it6 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1it6 RCSB], [http://www.ebi.ac.uk/pdbsum/1it6 PDBsum]</span></td></tr>
</table>
== Function ==
[[http://www.uniprot.org/uniprot/PP1G_HUMAN PP1G_HUMAN]] Protein phosphatase that associates with over 200 regulatory proteins to form highly specific holoenzymes which dephosphorylate hundreds of biological targets. Protein phosphatase 1 (PP1) is essential for cell division, and participates in the regulation of glycogen metabolism, muscle contractility and protein synthesis. Dephosphorylates RPS6KB1. Involved in regulation of ionic conductances and long-term synaptic plasticity. May play an important role in dephosphorylating substrates such as the postsynaptic density-associated Ca(2+)/calmodulin dependent protein kinase II. Component of the PTW/PP1 phosphatase complex, which plays a role in the control of chromatin structure and cell cycle progression during the transition from mitosis into interphase.<ref>PMID:17936702</ref> <ref>PMID:20516061</ref>  
== 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/it/1it6_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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=1it6 ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The crystal structure of the catalytic subunit of the protein phosphatase 1 (PP1), PP1 gamma, in complex with a marine toxin, calyculin A, was determined at 2.0 A resolution. The metal binding site contains the phosphate group of calyculin A and forms a tight network via the hydrophilic interactions between PP1 and calyculin A. Calyculin A is located in two of the three grooves, namely, in the hydrophobic groove and the acidic groove on the molecular surface. This is the first observation to note that the inhibitor adopts not a pseudocyclic conformation but an extended conformation in order to form a complex with the protein. The amino acid terminus of calyculin A contributes, in a limited manner, to the binding to PP1 gamma, which is consistent with findings from the studies of dose-inhibition analysis.

Crystal structure of the complex between calyculin A and the catalytic subunit of protein phosphatase 1.,Kita A, Matsunaga S, Takai A, Kataiwa H, Wakimoto T, Fusetani N, Isobe M, Miki K Structure. 2002 May;10(5):715-24. PMID:12015153<ref>PMID:12015153</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1it6" style="background-color:#fffaf0;"></div>

==See Also==
*[[Serine/threonine protein phosphatase|Serine/threonine protein phosphatase]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Human]]
[[Category: Phosphoprotein phosphatase]]
[[Category: Fusetani, N]]
[[Category: Isobe, M]]
[[Category: Kataiwa, H]]
[[Category: Kita, A]]
[[Category: Matsunaga, S]]
[[Category: Miki, K]]
[[Category: Takai, A]]
[[Category: Wakimoto, T]]
[[Category: Hydrolase]]
[[Category: Hydrolase-inhibitor complex]]