3SHV

Crystal structure of human MCPH1 tandem BRCT domains-gamma H2AX complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Specific recognition of phosphorylated tail of H2AX by the tandem BRCT domains of MCPH1 revealed by complex structure

Shao, Z.H.Li, F.D.Sy, S.M.-H.Yan, W.Zhang, Z.Gong, D.Wen, B.Huen, M.S.Y.Gong, Q.Wu, J.Shi, Y.

(2012) J.Struct.Biol. 177: 459-468

  • DOI: 10.1016/j.jsb.2011.11.022
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • MCPH1 is especially important for linking chromatin remodeling to DNA damage response. It contains three BRCT (BRCA1-carboxyl terminal) domains. The N-terminal region directly binds with chromatin remodeling complex SWI-SNF, and the C-terminal BRCT2- ...

    MCPH1 is especially important for linking chromatin remodeling to DNA damage response. It contains three BRCT (BRCA1-carboxyl terminal) domains. The N-terminal region directly binds with chromatin remodeling complex SWI-SNF, and the C-terminal BRCT2-BRCT3 domains (tandem BRCT domains) are involved in cellular DNA damage response. The MCPH1 gene associates with evolution of brain size, and its variation can cause primary microcephaly. In this study we solve the crystal structures of MCPH1 natural variant (A761) C-terminal tandem BRCT domains alone as well as in complex with γH2AX tail. Compared with other structures of tandem BRCT domains, the most significant differences lie in phosphopeptide binding pocket. Additionally, fluorescence polarization assays demonstrate that MCPH1 tandem BRCT domains show a binding selectivity on pSer +3 and prefer to bind phosphopeptide with free COOH-terminus. Taken together, our research provides new structural insights into BRCT-phosphopeptide recognition mechanism.


    Organizational Affiliation

    Hefei National Laboratory for Physical Sciences at Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230026, PR China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Microcephalin
A, B
206Homo sapiensMutation(s): 0 
Gene Names: MCPH1
Find proteins for Q8NEM0 (Homo sapiens)
Go to Gene View: MCPH1
Go to UniProtKB:  Q8NEM0
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Histone H2A.x
C, D
10Homo sapiensMutation(s): 0 
Gene Names: H2AFX (H2AX)
Find proteins for P16104 (Homo sapiens)
Go to Gene View: H2AFX
Go to UniProtKB:  P16104
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
C, D
L-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.197 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 122.772α = 90.00
b = 132.860β = 90.00
c = 31.534γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-12-28
    Type: Initial release
  • Version 1.1: 2013-06-19
    Type: Database references
  • Version 1.2: 2017-11-08
    Type: Advisory, Refinement description