3ngq

<StructureSection load='3ngq' size='340' side='right' caption='[[3ngq]], [[Resolution|resolution]] 1.80&Aring;' scene=''>

<table><tr><td colspan='2'>[[3ngq]] is a 1 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=3NGQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3NGQ FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=1PS:3-PYRIDINIUM-1-YLPROPANE-1-SULFONATE'>1PS</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>

<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3ngn|3ngn]], [[3ngo|3ngo]]</td></tr>

<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CNOT6L, CCR4B ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=3ngq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ngq OCA], [http://pdbe.org/3ngq PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3ngq RCSB], [http://www.ebi.ac.uk/pdbsum/3ngq PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3ngq ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/CNO6L_HUMAN CNO6L_HUMAN]] Plays a role in the deadenylation of mRNAs in the cytoplasm. Has 3'-5' poly(A) exoribonuclease activity for synthetic poly(A) RNA substrate. May be involved in the deadenylation-dependent degradation of mRNAs through the 3'-UTR AU-rich element-mediated mechanism. Involved in deadenylation-dependent degradation of CDKN1B mRNA.<ref>PMID:17452450</ref>

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== Publication Abstract from PubMed ==

CCR4, an evolutionarily conserved member of the CCR4-NOT complex, is the main cytoplasmic deadenylase. It contains a C-terminal nuclease domain with homology to the endonuclease-exonuclease-phosphatase (EEP) family of enzymes. We have determined the high-resolution three-dimensional structure of the nuclease domain of CNOT6L, a human homologue of CCR4, by X-ray crystallography using the single-wavelength anomalous dispersion method. This first structure of a deadenylase belonging to the EEP family adopts a complete alpha/beta sandwich fold typical of hydrolases with highly conserved active site residues similar to APE1. The active site of CNOT6L should recognize the RNA substrate through its negatively charged surface. In vitro deadenylase assays confirm the critical active site residues and show that the nuclease domain of CNOT6L exhibits full Mg(2+)-dependent deadenylase activity with strict poly(A) RNA substrate specificity. To understand the structural basis for poly(A) RNA substrate binding, crystal structures of the CNOT6L nuclease domain have also been determined in complex with AMP and poly(A) DNA. The resulting structures suggest a molecular deadenylase mechanism involving a pentacovalent phosphate transition.

Crystal structure of the human CNOT6L nuclease domain reveals strict poly(A) substrate specificity.,Wang H, Morita M, Yang X, Suzuki T, Yang W, Wang J, Ito K, Wang Q, Zhao C, Bartlam M, Yamamoto T, Rao Z EMBO J. 2010 Aug 4;29(15):2566-76. Epub 2010 Jul 13. PMID:20628353<ref>PMID:20628353</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 3ngq" style="background-color:#fffaf0;"></div>

[[Category: Human]]

[[Category: Bartlam, M]]

[[Category: Morita, M]]

[[Category: Rao, Z]]

[[Category: Wang, H]]

[[Category: Yamamoto, T]]

[[Category: Yang, W]]

[[Category: Hydrolase]]