1T15 image
Deposition Date 2004-04-15
Release Date 2004-05-11
Last Version Date 2024-10-30
Entry Detail
PDB ID:
1T15
Title:
Crystal Structure of the Brca1 BRCT Domains in Complex with the Phosphorylated Interacting Region from Bach1 Helicase
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Method Details:
Experimental Method:
Resolution:
1.85 Å
R-Value Free:
0.22
R-Value Work:
0.20
Space Group:
P 32 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Breast cancer type 1 susceptibility protein
Gene (Uniprot):BRCA1
Chain IDs:A
Chain Length:214
Number of Molecules:1
Biological Source:Homo sapiens
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
SEP B SER PHOSPHOSERINE
Primary Citation
Structure and mechanism of BRCA1 BRCT domain recognition of phosphorylated BACH1 with implications for cancer
Nat.Struct.Mol.Biol. 11 512 518 (2004)
PMID: 15133502 DOI: 10.1038/nsmb775

Abstact

Germline mutations in the BRCA1 tumor suppressor gene often result in a significant increase in susceptibility to breast and ovarian cancers. Although the molecular basis of their effects remains largely obscure, many mutations are known to target the highly conserved C-terminal BRCT repeats that function as a phosphoserine/phosphothreonine-binding module. We report the X-ray crystal structure at a resolution of 1.85 A of the BRCA1 tandem BRCT domains in complex with a phosphorylated peptide representing the minimal interacting region of the DEAH-box helicase BACH1. The structure reveals the determinants of this novel class of BRCA1 binding events. We show that a subset of disease-linked mutations act through specific disruption of phospho-dependent BRCA1 interactions rather than through gross structural perturbation of the tandem BRCT domains.

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Primary Citation of related structures