2F5J

Crystal structure of MRG domain from human MRG15


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 

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This is version 1.2 of the entry. See complete history


Literature

The MRG domain of human MRG15 uses a shallow hydrophobic pocket to interact with the N-terminal region of PAM14

Zhang, P.Zhao, J.Wang, B.Du, J.Lu, Y.Chen, J.Ding, J.

(2006) Protein Sci 15: 2423-2434

  • DOI: 10.1110/ps.062397806
  • Primary Citation of Related Structures:  
    2F5J

  • PubMed Abstract: 
  • MRG15 is a transcription factor expressed in a variety of human tissues, and its orthologs have been found in many other eukaryotes which constitute the MRG protein family. It plays a vital role in embryonic development and cell proliferation, and is involved in cellular senescence ...

    MRG15 is a transcription factor expressed in a variety of human tissues, and its orthologs have been found in many other eukaryotes which constitute the MRG protein family. It plays a vital role in embryonic development and cell proliferation, and is involved in cellular senescence. The C-terminal part of MRG15 forms a conserved MRG domain which is involved in interactions with the tumor suppressor protein retinoblastoma and a nucleoprotein PAM14 during transcriptional regulation. We report here the characterization of the interaction between the MRG domain of human MRG15 and PAM14 using both yeast two-hybrid and in vitro binding assays based on the crystal structure of the MRG domain. The MRG domain is predominantly hydrophobic, and consists of mainly alpha-helices that are arranged in a three-layer sandwich topology. The hydrophobic core is stabilized by interactions among a number of conserved hydrophobic residues. The molecular surface is largely hydrophobic, but contains a few hydrophilic patches. Structure-based site-directed mutagenesis studies identified key residues involved in the binding of PAM14. Structural and biochemical data together demonstrate that the PAM14 binding site is consisted of residues Ile160, Leu168, Val169, Trp172, Tyr235, Val268, and Arg269 of MRG15, which form a shallow hydrophobic pocket to interact with the N-terminal 50 residues of PAM14 through primarily hydrophobic interactions. These results provide the molecular basis for the interaction between the MRG domain and PAM14, and reveal insights into the potential biological function of MRG15 in transcription regulation and chromatin remodeling.


    Organizational Affiliation

    State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Mortality factor 4-like protein 1A, B181Homo sapiensMutation(s): 0 
Gene Names: MORF4L1MRG15FWP006HSPC008HSPC061PP368
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UBU8 (Homo sapiens)
Explore Q9UBU8 
Go to UniProtKB:  Q9UBU8
PHAROS:  Q9UBU8
GTEx:  ENSG00000185787 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9UBU8
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 111.151α = 90
b = 111.151β = 90
c = 86.991γ = 120
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: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance