3SZM

STRUCTURE OF HUMAN MICROCEPHALIN (MCPH1) TANDEM BRCT DOMAINS IN COMPLEX WITH A GAMMA-H2AX PHOSPHOPEPTIDE

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.63 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Dual recognition of phosphoserine and phosphotyrosine in histone variant H2A.X by DNA damage response protein MCPH1.

Singh, N., Basnet, H., Wiltshire, T.D., Mohammad, D.H., Thompson, J.R., Heroux, A., Botuyan, M.V., Yaffe, M.B., Couch, F.J., Rosenfeld, M.G., Mer, G.

(2012) Proc Natl Acad Sci U S A 109: 14381-14386

  • DOI: 10.1073/pnas.1212366109
  • Primary Citation of Related Structures:  
    3U3Z, 3SZM

  • PubMed Abstract: 

    • Tyr142, the C-terminal amino acid of histone variant H2A.X is phosphorylated by WSTF (Williams-Beuren syndrome transcription factor), a component of the WICH complex (WSTF-ISWI chromatin-remodeling complex), under basal conditions in the cell. In response to DNA double-strand breaks (DSBs), H2A ...

    Tyr142, the C-terminal amino acid of histone variant H2A.X is phosphorylated by WSTF (Williams-Beuren syndrome transcription factor), a component of the WICH complex (WSTF-ISWI chromatin-remodeling complex), under basal conditions in the cell. In response to DNA double-strand breaks (DSBs), H2A.X is instantaneously phosphorylated at Ser139 by the kinases ATM and ATR and is progressively dephosphorylated at Tyr142 by the Eya1 and Eya3 tyrosine phosphatases, resulting in a temporal switch from a postulated diphosphorylated (pSer139, pTyr142) to monophosphorylated (pSer139) H2A.X state. How mediator proteins interpret these two signals remains a question of fundamental interest. We provide structural, biochemical, and cellular evidence that Microcephalin (MCPH1), an early DNA damage response protein, can read both modifications via its tandem BRCA1 C-terminal (BRCT) domains, thereby emerging as a versatile sensor of H2A.X phosphorylation marks. We show that MCPH1 recruitment to sites of DNA damage is linked to both states of H2A.X.

    Organizational Affiliation: 

    Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN 55905, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Microcephalin A, B, C, D, E, F, G, H199Homo sapiensMutation(s): 0 
Gene Names: MCPH1
Find proteins for Q8NEM0 (Homo sapiens)
Explore Q8NEM0 
Go to UniProtKB:  Q8NEM0
NIH Common Fund Data Resources
PHAROS:  Q8NEM0
GTEx:  ENSG00000147316
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H2A.x I, J, K, L, M, N, O, P10Homo sapiensMutation(s): 0 
Gene Names: H2AX, H2AFX
Find proteins for P16104 (Homo sapiens)
Explore P16104 
Go to UniProtKB:  P16104
NIH Common Fund Data Resources
PHAROS:  P16104
GTEx:  ENSG00000188486
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP		I,J,K,L,M,N,O,PL-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.63 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 67.81α = 72.1
b = 82.23β = 89.87
c = 104.42γ = 80.94
Software Package:
Software NamePurpose
HKL-2000data collection
DMmodel building
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
DMphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-11-30
    Type: Initial release
  • Version 1.1: 2012-08-29
    Changes: Database references
  • Version 1.2: 2012-09-19
    Changes: Database references