2F5J

Crystal structure of MRG domain from human MRG15


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.205 

wwPDB Validation 3D Report Full Report


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

  • 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 ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Mortality factor 4-like protein 1
A, B
181Homo sapiensMutation(s): 0 
Gene Names: MORF4L1 (MRG15)
Find proteins for Q9UBU8 (Homo sapiens)
Go to Gene View: MORF4L1
Go to UniProtKB:  Q9UBU8
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.205 
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 111.151α = 90.00
b = 111.151β = 90.00
c = 86.991γ = 120.00
Software Package:
Software NamePurpose
SOLVEphasing
SCALEPACKdata scaling
HKL-2000data reduction
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-11-14
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance