3VA4 image
Deposition Date 2011-12-28
Release Date 2012-02-01
Last Version Date 2024-10-09
Entry Detail
PDB ID:
3VA4
Keywords:
CELL CYCLE
Title:
Crystal structure of the mammalian MDC1 FHA domain complexed with CHK2 pThr68 peptide
Biological Source:
Source Organism:
Mus musculus (Taxon ID: 10090)
Homo sapiens (Taxon ID: 9606)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.54 Å
R-Value Free:
0.20
R-Value Work:
0.15
R-Value Observed:
0.16
Space Group:
P 21 21 21
3VA4 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Mediator of DNA damage checkpoint protein 1
Gene (Uniprot):Mdc1
Chain IDs:A, C (auth: B)
Chain Length:132
Number of Molecules:2
Biological Source:Mus musculus
UniProt ID:Q5PSV9 Pfam ID:PF00498
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Serine/threonine-protein kinase Chk2
Gene (Uniprot):CHEK2
Chain IDs:B (auth: C)
Chain Length:11
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:O96017 EC:2.7.11.1
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
TPO B THR PHOSPHOTHREONINE
Primary Citation
Structural Delineation of MDC1-FHA Domain Binding with CHK2-pThr68.
Biochemistry ? ? ? (2012)
PMID: 22211259 DOI: 10.1021/bi201709w

Abstact

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.

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Disease

Primary Citation of related structures
3VA1