title: Structural basis for recruitment of BRCA2 by PALB2.
abstract: The breast cancer 2, early onset protein (BRCA2) is central to the repair of DNA damage by homologous recombination. BRCA2 recruits the recombinase RAD51 to sites of damage, regulates its assembly into nucleoprotein filaments and thereby promotes homologous recombination. Localization of BRCA2 to nuclear foci requires its association with the partner and localizer of BRCA2 (PALB2), mutations in which are associated with cancer predisposition, as well as subtype N of Fanconi anaemia. We have determined the structure of the PALB2 carboxy-terminal beta-propeller domain in complex with a BRCA2 peptide. The structure shows the molecular determinants of this important protein-protein interaction and explains the effects of both cancer-associated truncating mutants in PALB2 and missense mutations in the amino-terminal region of BRCA2.
authors.affiliation: Cancer Research UK DNA Repair Enzymes Group, Section of Structural Biology, 237 Fulham Road, London SW3 6JB, UK. antony.oliver@icr.ac.uk
authors.forename: Antony W
authors.initials: AW
authors.lastname: Oliver
authors.forename: Sally
authors.initials: S
authors.lastname: Swift
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Lord
authors.forename: Alan
authors.initials: A
authors.lastname: Ashworth
authors.forename: Laurence H
authors.initials: LH
authors.lastname: Pearl
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D051017:Apoptosis Regulatory Proteins; D024682:BRCA2 Protein / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism*; D001665:Binding Sites; D002460:Cell Line; D018360:Crystallography, X-Ray; D000076164:Fanconi Anemia Complementation Group N Protein; D006801:Humans; D008958:Models, Molecular; D008969:Molecular Sequence Data; D009687:Nuclear Proteins / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism*; D011485:Protein Binding; D020836:Protein Structure, Quaternary; D017434:Protein Structure, Tertiary; D016415:Sequence Alignment; D025521:Tumor Suppressor Proteins / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism*
chemical_list: D051017:Apoptosis Regulatory Proteins; C118024:BLID protein, human; D024682:BRCA2 Protein; C551750:BRCA2 protein, human; D000076164:Fanconi Anemia Complementation Group N Protein; D009687:Nuclear Proteins; C512790:PALB2 protein, human; D025521:Tumor Suppressor Proteins