2j2s: Difference between revisions

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[[Image:2j2s.gif|left|200px]]
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{{STRUCTURE_2j2s|  PDB=2j2s  |  SCENE=  }}  
{{STRUCTURE_2j2s|  PDB=2j2s  |  SCENE=  }}  


'''SOLUTION STRUCTURE OF THE NONMETHYL-CPG-BINDING CXXC DOMAIN OF THE LEUKAEMIA-ASSOCIATED MLL HISTONE METHYLTRANSFERASE'''
===SOLUTION STRUCTURE OF THE NONMETHYL-CPG-BINDING CXXC DOMAIN OF THE LEUKAEMIA-ASSOCIATED MLL HISTONE METHYLTRANSFERASE===




==Overview==
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Methylation of CpG dinucleotides is the major epigenetic modification of mammalian genomes, critical for regulating chromatin structure and gene activity. The mixed-lineage leukaemia (MLL) CXXC domain selectively binds nonmethyl-CpG DNA, and is required for transformation by MLL fusion proteins that commonly arise from recurrent chromosomal translocations in infant and secondary treatment-related acute leukaemias. To elucidate the molecular basis of nonmethyl-CpG DNA recognition, we determined the structure of the human MLL CXXC domain by multidimensional NMR spectroscopy. The CXXC domain has a novel fold in which two zinc ions are each coordinated tetrahedrally by four conserved cysteine ligands provided by two CGXCXXC motifs and two distal cysteine residues. We have identified the CXXC domain DNA binding interface by means of chemical shift perturbation analysis, cross-saturation transfer and site-directed mutagenesis. In particular, we have shown that residues in an extended surface loop are in close contact with the DNA. These data provide a template for the design of specifically targeted therapeutics for poor prognosis MLL-associated leukaemias.
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{{ABSTRACT_PUBMED_16990798}}


==About this Structure==
==About this Structure==
2J2S is a [[Single protein]] structure of 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=2J2S OCA].  
2J2S is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2J2S OCA].  


==Reference==
==Reference==
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[[Category: Zinc binding]]
[[Category: Zinc binding]]
[[Category: Zinc-finger]]
[[Category: Zinc-finger]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May  4 08:15:37 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 06:42:12 2008''

Revision as of 06:42, 28 July 2008

File:2j2s.png

Template:STRUCTURE 2j2s

SOLUTION STRUCTURE OF THE NONMETHYL-CPG-BINDING CXXC DOMAIN OF THE LEUKAEMIA-ASSOCIATED MLL HISTONE METHYLTRANSFERASESOLUTION STRUCTURE OF THE NONMETHYL-CPG-BINDING CXXC DOMAIN OF THE LEUKAEMIA-ASSOCIATED MLL HISTONE METHYLTRANSFERASE

Template:ABSTRACT PUBMED 16990798

About this StructureAbout this Structure

2J2S is a Single protein structure of sequence from Homo sapiens. Full experimental information is available from OCA.

ReferenceReference

Solution structure of the nonmethyl-CpG-binding CXXC domain of the leukaemia-associated MLL histone methyltransferase., Allen MD, Grummitt CG, Hilcenko C, Min SY, Tonkin LM, Johnson CM, Freund SM, Bycroft M, Warren AJ, EMBO J. 2006 Oct 4;25(19):4503-12. Epub 2006 Sep 21. PMID:16990798

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