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  • Title: Cancer predisposing mutations in BRCT domains.
    Author: di Masi A, Gullotta F, Cappadonna V, Leboffe L, Ascenzi P.
    Journal: IUBMB Life; 2011 Jul; 63(7):503-12. PubMed ID: 21698754.
    Abstract:
    Members of the breast cancer 1 (BRCA1) carboxy-terminal (BRCT) superfamily are involved in the cellular response to the DNA damage sensing and repair, as well as in the cell cycle control. All proteins are characterized by one or more BRCT domain(s), which provides a flexible framework representing scaffolding element(s) in multi-protein complexes. In particular, BRCA1, nibrin (NBN), and microcephalin (MCPH1), generally considered as molecular models for cancer-prone syndromes, contain BRCT domains able to bind phosphorylated proteins. Mutations within the BRCT domains of BRCA1, NBN, and MCPH1 are responsible for cancer susceptibility, both at the homozygous and heterozygous status. Here, we report a critical analysis of: (i) the BRCT domain structure, (ii) the role of BRCA1, NBN, and MCPH1 in DNA damage sensing and repair as well as in cell cycle control, and (iii) the pathological effects of mutations within the BRCT domains of BRCA1, NBN, and MCPH1.
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