2F5K

Crystal structure of the chromo domain of human MRG15


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.227 

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This is version 1.3 of the entry. See complete history


Literature

Structure of human MRG15 chromo domain and its binding to Lys36-methylated histone H3.

Zhang, P.Du, J.Sun, B.Dong, X.Xu, G.Zhou, J.Huang, Q.Liu, Q.Hao, Q.Ding, J.

(2006) Nucleic Acids Res 34: 6621-6628

  • DOI: https://doi.org/10.1093/nar/gkl989
  • Primary Citation of Related Structures:  
    2F5K

  • PubMed Abstract: 

    Human MRG15 is a transcription factor that plays a vital role in embryonic development, cell proliferation and cellular senescence. It comprises a putative chromo domain in the N-terminal part that has been shown to participate in chromatin remodeling and transcription regulation. We report here the crystal structure of human MRG15 chromo domain at 2.2 A resolution. The MRG15 chromo domain consists of a beta-barrel and a long alpha-helix and assumes a structure more similar to the Drosophila MOF chromo barrel domain than the typical HP1/Pc chromo domains. The beta-barrel core contains a hydrophobic pocket formed by three conserved aromatic residues Tyr26, Tyr46 and Trp49 as a potential binding site for a modified residue of histone tail. However, the binding groove for the histone tail seen in the HP1/Pc chromo domains is pre-occupied by an extra beta-strand. In vitro binding assay results indicate that the MRG15 chromo domain can bind to methylated Lys36, but not methylated Lys4, Lys9 and Lys27 of histone H3. These data together suggest that the MRG15 chromo domain may function as an adaptor module which can bind to a modified histone H3 in a mode different from that of the HP1/Pc chromo domains.


  • Organizational Affiliation

    State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Mortality factor 4-like protein 1
A, B, C, D, E
A, B, C, D, E, F
102Homo sapiensMutation(s): 0 
Gene Names: MORF4L1MRG15FWP006HSPC008HSPC061PP368
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UBU8 (Homo sapiens)
Explore Q9UBU8 
Go to UniProtKB:  Q9UBU8
GTEx:  ENSG00000185787 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9UBU8
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.227 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 109.48α = 90
b = 80.313β = 123.91
c = 81.285γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-11-14
    Type: Initial release
  • Version 1.1: 2007-12-17
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-09-18
    Changes: Advisory, Data collection, Database references, Derived calculations, Source and taxonomy, Structure summary