View source for 1wvn


==Crystal Structure of domain 3 of human alpha polyC binding protein==
<StructureSection load='1wvn' size='340' side='right'caption='[[1wvn]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1wvn]] is a 1 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=1WVN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1WVN 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='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1wvn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1wvn OCA], [https://pdbe.org/1wvn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1wvn RCSB], [https://www.ebi.ac.uk/pdbsum/1wvn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1wvn ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PCBP1_HUMAN PCBP1_HUMAN] Single-stranded nucleic acid binding protein that binds preferentially to oligo dC.
== 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/wv/1wvn_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=1wvn ConSurf].
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== Publication Abstract from PubMed ==
Poly(C)-binding proteins (CPs) are important regulators of mRNA stability and translational regulation. They recognize C-rich RNA through their triple KH (hn RNP K homology) domain structures and are thought to carry out their function though direct protection of mRNA sites as well as through interactions with other RNA-binding proteins. We report the crystallographically derived structure of the third domain of alphaCP1 to 2.1 A resolution. alphaCP1-KH3 assumes a classical type I KH domain fold with a triple-stranded beta-sheet held against a three-helix cluster in a betaalphaalphabetabetaalpha configuration. Its binding affinity to an RNA sequence from the 3'-untranslated region (3'-UTR) of androgen receptor mRNA was determined using surface plasmon resonance, giving a K(d) of 4.37 microM, which is indicative of intermediate binding. A model of alphaCP1-KH3 with poly(C)-RNA was generated by homology to a recently reported RNA-bound KH domain structure and suggests the molecular basis for oligonucleotide binding and poly(C)-RNA specificity.

Structure and RNA binding of the third KH domain of poly(C)-binding protein 1.,Sidiqi M, Wilce JA, Vivian JP, Porter CJ, Barker A, Leedman PJ, Wilce MC Nucleic Acids Res. 2005 Feb 24;33(4):1213-21. Print 2005. PMID:15731341<ref>PMID:15731341</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Sidiqu M]]
[[Category: Wilce JA]]
[[Category: Wilce MCJ]]