3VA4

Crystal structure of the mammalian MDC1 FHA domain complexed with CHK2 pThr68 peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.54 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.159 
  • R-Value Observed: 0.162 

wwPDB Validation   3D Report Full Report


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Literature

Structural Delineation of MDC1-FHA Domain Binding with CHK2-pThr68.

Wu, H.H.Wu, P.Y.Huang, K.F.Kao, Y.Y.Tsai, M.D.

(2012) Biochemistry 

  • DOI: 10.1021/bi201709w
  • Primary Citation of Related Structures:  
    3VA1, 3VA4

  • PubMed Abstract: 
  • Mammalian MDC1 interacts with CHK2 in the regulation of DNA damage-induced S-phase checkpoint and apoptosis, which is directed by the association of MDC1-FHA and CHK2-pThr68. However, different ligand specificities of MDC1-FHA have been reported, and no structure is available ...

    Mammalian MDC1 interacts with CHK2 in the regulation of DNA damage-induced S-phase checkpoint and apoptosis, which is directed by the association of MDC1-FHA and CHK2-pThr68. However, different ligand specificities of MDC1-FHA have been reported, and no structure is available. Here we report the crystal structures of MDC1-FHA and its complex with a CHK2 peptide containing pThr68. Unlike other FHA domains, MDC1-FHA exists as an intrinsic dimer in solution and in crystals. Structural and binding analyses support pThr+3 ligand specificity and provide structural insight into MDC1-CHK2 interaction.


    Organizational Affiliation

    Institute of Biological Chemistry, Academia Sinica, Nankang, Taipei 115, Taiwan.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Mediator of DNA damage checkpoint protein 1A, C [auth B]132Mus musculusMutation(s): 0 
Gene Names: Mdc1Kiaa0170
UniProt
Find proteins for Q5PSV9 (Mus musculus)
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Go to UniProtKB:  Q5PSV9
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Serine/threonine-protein kinase Chk2B [auth C]11Homo sapiensMutation(s): 0 
Gene Names: CHEK2CDS1CHK2RAD53
EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for O96017 (Homo sapiens)
Explore O96017 
Go to UniProtKB:  O96017
PHAROS:  O96017
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TPO
Query on TPO
B [auth C]L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.54 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.159 
  • R-Value Observed: 0.162 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 28.508α = 90
b = 70.224β = 90
c = 101.335γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SHELXSphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-02-01
    Type: Initial release