2J2S

Solution structure of the nonmethyl-CpG-binding CXXC domain of the leukaemia-associated MLL histone methyltransferase


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: NO VIOLATIONS 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Solution Structure of the Nonmethyl-Cpg-Binding Cxxc Domain of the Leukaemia-Associated Mll Histone Methyltransferase

Allen, M.D.Grummitt, C.G.Hilcenko, C.Min, S.Y.Tonkin, L.M.Johnson, C.M.Freund, S.M.Bycroft, M.Warren, A.J.

(2006) EMBO J 25: 4503

  • DOI: 10.1038/sj.emboj.7601340
  • Primary Citation of Related Structures:  
    2J2S

  • PubMed Abstract: 
  • 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 ...

    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.


    Organizational Affiliation

    Centre for Protein Engineering, Cambridge, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ZINC FINGER PROTEIN HRXA72Homo sapiensMutation(s): 3 
Gene Names: KMT2AALL1CXXC7HRXHTRXMLLMLL1TRX1
EC: 2.1.1.354
Find proteins for Q03164 (Homo sapiens)
Explore Q03164 
Go to UniProtKB:  Q03164
NIH Common Fund Data Resources
PHAROS  Q03164
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: NO VIOLATIONS 
  • OLDERADO: 2J2S Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-08-21
    Type: Initial release
  • Version 1.1: 2017-04-19
    Changes: Other