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[[Image:2v0p.png|left|200px]]
==THE STRUCTURE OF TAP42 ALPHA4 SUBUNIT==
<StructureSection load='2v0p' size='340' side='right' caption='[[2v0p]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2v0p]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2V0P OCA]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</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>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Glucokinase Glucokinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.1.2 2.7.1.2] </span></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=2v0p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2v0p OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2v0p RCSB], [http://www.ebi.ac.uk/pdbsum/2v0p PDBsum]</span></td></tr>
<table>
== 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/v0/2v0p_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/chain_selection.php?pdb_ID=2ata ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Physiological functions of protein phosphatase 2A (PP2A) are determined via the association of its catalytic subunit (PP2Ac) with diverse regulatory subunits. The predominant form of PP2Ac assembles into a heterotrimer comprising the scaffolding PR65/A subunit together with a variable regulatory B subunit. A distinct population of PP2Ac associates with the Tap42/alpha4 subunit, an interaction mutually exclusive with that of PR65/A. Tap42/alpha4 is also an interacting subunit of the PP2Ac-related phosphatases, PP4 and PP6. Tap42/alpha4, an essential protein in yeast and suppressor of apoptosis in mammals, contributes to critical cellular functions including the Tor signaling pathway. Here, we describe the crystal structure of the PP2Ac-interaction domain of Saccharomyces cerevisiae Tap42. The structure reveals an all alpha-helical protein with striking similarity to 14-3-3 and tetratricopeptide repeat (TPR) proteins. Mutational analyses of structurally conserved regions of Tap42/alpha4 identified a positively charged region critical for its interactions with PP2Ac. We propose a scaffolding function for Tap42/alpha4 whereby the interaction of PP2Ac at its N-terminus promotes the dephosphorylation of substrates recruited to the C-terminal region of the molecule.


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The structure of Tap42/alpha4 reveals a tetratricopeptide repeat-like fold and provides insights into PP2A regulation.,Yang J, Roe SM, Prickett TD, Brautigan DL, Barford D Biochemistry. 2007 Jul 31;46(30):8807-15. Epub 2007 Jul 6. PMID:17616149<ref>PMID:17616149</ref>
The line below this paragraph, containing "STRUCTURE_2v0p", creates the "Structure Box" on the page.
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{{STRUCTURE_2v0p|  PDB=2v0p  |  SCENE=  }}


===THE STRUCTURE OF TAP42 ALPHA4 SUBUNIT===
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
 
</div>
 
== References ==
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<references/>
The line below this paragraph, {{ABSTRACT_PUBMED_17616149}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 17616149 is the PubMed ID number.
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{{ABSTRACT_PUBMED_17616149}}
 
==About this Structure==
[[2v0p]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2V0P OCA].
 
==Reference==
<ref group="xtra">PMID:017616149</ref><references group="xtra"/>
[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Barford, D.]]
[[Category: Barford, D.]]

Revision as of 08:36, 7 May 2014

THE STRUCTURE OF TAP42 ALPHA4 SUBUNIT

2v0p, resolution 1.80Å

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