3qmb: Difference between revisions
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==Structural Basis of Selective Binding of Nonmethylated CpG Islands by the CXXC Domain of CFP1== | |||
<StructureSection load='3qmb' size='340' side='right' caption='[[3qmb]], [[Resolution|resolution]] 2.06Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3qmb]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3QMB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3QMB FirstGlance]. <br> | |||
==Function== | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | ||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3qmc|3qmc]], [[3qmd|3qmd]], [[3qmg|3qmg]], [[3qmh|3qmh]], [[3qmi|3qmi]]</td></tr> | |||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CFP1, CGBP, CXXC1, PCCX1, PHF18 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</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=3qmb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3qmb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3qmb RCSB], [http://www.ebi.ac.uk/pdbsum/3qmb PDBsum]</span></td></tr> | |||
</table> | |||
== Function == | |||
[[http://www.uniprot.org/uniprot/CXXC1_HUMAN CXXC1_HUMAN]] Transcriptional activator that exhibits a unique DNA binding specificity for CpG unmethylated motifs with a preference for CpGG.<ref>PMID:21407193</ref> | [[http://www.uniprot.org/uniprot/CXXC1_HUMAN CXXC1_HUMAN]] Transcriptional activator that exhibits a unique DNA binding specificity for CpG unmethylated motifs with a preference for CpGG.<ref>PMID:21407193</ref> | ||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
CFP1 is a CXXC domain-containing protein and an essential component of the SETD1 histone H3K4 methyltransferase complex. CXXC domain proteins direct different chromatin-modifying activities to various chromatin regions. Here, we report crystal structures of the CFP1 CXXC domain in complex with six different CpG DNA sequences. The crescent-shaped CFP1 CXXC domain is wedged into the major groove of the CpG DNA, distorting the B-form DNA, and interacts extensively with the major groove of the DNA. The structures elucidate the molecular mechanism of the non-methylated CpG-binding specificity of the CFP1 CXXC domain. The CpG motif is confined by a tripeptide located in a rigid loop, which only allows the accommodation of the non-methylated CpG dinucleotide. Furthermore, we demonstrate that CFP1 has a preference for a guanosine nucleotide following the CpG motif. | |||
The structural basis for selective binding of non-methylated CpG islands by the CFP1 CXXC domain.,Xu C, Bian C, Lam R, Dong A, Min J Nat Commun. 2011 Mar;2:227. PMID:21407193<ref>PMID:21407193</ref> | |||
== | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Arrowsmith, C H | [[Category: Arrowsmith, C H]] | ||
[[Category: Bian, C B | [[Category: Bian, C B]] | ||
[[Category: Bochkarev, A | [[Category: Bochkarev, A]] | ||
[[Category: Bountra, C | [[Category: Bountra, C]] | ||
[[Category: Edwards, A M | [[Category: Edwards, A M]] | ||
[[Category: Kania, J | [[Category: Kania, J]] | ||
[[Category: Lam, R | [[Category: Lam, R]] | ||
[[Category: Min, J | [[Category: Min, J]] | ||
[[Category: | [[Category: Structural genomic]] | ||
[[Category: Weigelt, J | [[Category: Weigelt, J]] | ||
[[Category: Xu, C | [[Category: Xu, C]] | ||
[[Category: Cxxc-type zn finger]] | [[Category: Cxxc-type zn finger]] | ||
[[Category: Dna binding]] | [[Category: Dna binding]] | ||
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[[Category: Nucleus speckle]] | [[Category: Nucleus speckle]] | ||
[[Category: Sgc]] | [[Category: Sgc]] | ||
[[Category: Unmethylated cpg motif]] | [[Category: Unmethylated cpg motif]] | ||
