BRCA1 and Its Network of Interacting Partners

BRCA1 is a large multi-domain protein with a pivotal role in maintaining genome stability and cell cycle progression. Germline mutations in the BRCA1 gene confer an estimated lifetime risk of 60%–80% for breast cancer and 15%–60% for ovarian cancer. Many of the germline m...

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Main Authors: Kyriacos Kyriacou, Charita M. Christou
Format: Article
Language:English
Published: MDPI AG 2013-01-01
Series:Biology
Subjects:
Online Access:http://www.mdpi.com/2079-7737/2/1/40
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author Kyriacos Kyriacou
Charita M. Christou
author_facet Kyriacos Kyriacou
Charita M. Christou
author_sort Kyriacos Kyriacou
collection DOAJ
description BRCA1 is a large multi-domain protein with a pivotal role in maintaining genome stability and cell cycle progression. Germline mutations in the BRCA1 gene confer an estimated lifetime risk of 60%–80% for breast cancer and 15%–60% for ovarian cancer. Many of the germline mutations associated with cancer development are concentrated in the amino terminal RING domain and the carboxyl terminal BRCT motifs of BRCA1, which are the most well-characterized regions of the protein. The function of BRCA1 in DNA repair, transcription and cell cycle control through the DNA damage response is orchestrated through its association with an impressive repertoire of protein complexes. The association of BRCA1 with ATM/ATR, CHK2 and Aurora A protein kinases regulates cell cycle progression, whilst its association with RAD51 has a direct impact on the repair of double strand DNA breaks (DSBs) by homologous recombination (HR). BRCA1 interactions with the MRN complex of proteins, with the BRCC complex of proteins that exhibit E3 ligase activity and with the phosphor proteins CtIP, BACH1 (BRIP1) and Abraxas (CCDC98) are also implicated in DNA repair mechanisms and cell cycle checkpoint control. BRCA1 through its association with specific proteins and multi-protein complexes is a sentinel of the normal cell cycle control and DNA repair.
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spelling doaj.art-66f917a637a148f8b0a1d34896d4aff82023-09-03T09:55:39ZengMDPI AGBiology2079-77372013-01-0121406310.3390/biology2010040BRCA1 and Its Network of Interacting PartnersKyriacos KyriacouCharita M. ChristouBRCA1 is a large multi-domain protein with a pivotal role in maintaining genome stability and cell cycle progression. Germline mutations in the BRCA1 gene confer an estimated lifetime risk of 60%–80% for breast cancer and 15%–60% for ovarian cancer. Many of the germline mutations associated with cancer development are concentrated in the amino terminal RING domain and the carboxyl terminal BRCT motifs of BRCA1, which are the most well-characterized regions of the protein. The function of BRCA1 in DNA repair, transcription and cell cycle control through the DNA damage response is orchestrated through its association with an impressive repertoire of protein complexes. The association of BRCA1 with ATM/ATR, CHK2 and Aurora A protein kinases regulates cell cycle progression, whilst its association with RAD51 has a direct impact on the repair of double strand DNA breaks (DSBs) by homologous recombination (HR). BRCA1 interactions with the MRN complex of proteins, with the BRCC complex of proteins that exhibit E3 ligase activity and with the phosphor proteins CtIP, BACH1 (BRIP1) and Abraxas (CCDC98) are also implicated in DNA repair mechanisms and cell cycle checkpoint control. BRCA1 through its association with specific proteins and multi-protein complexes is a sentinel of the normal cell cycle control and DNA repair.http://www.mdpi.com/2079-7737/2/1/40BRCA1DNA repair damage responseHRcell cycle checkpoint regulationphosphorylationE3 ligaseubiquitination
spellingShingle Kyriacos Kyriacou
Charita M. Christou
BRCA1 and Its Network of Interacting Partners
Biology
BRCA1
DNA repair damage response
HR
cell cycle checkpoint regulation
phosphorylation
E3 ligase
ubiquitination
title BRCA1 and Its Network of Interacting Partners
title_full BRCA1 and Its Network of Interacting Partners
title_fullStr BRCA1 and Its Network of Interacting Partners
title_full_unstemmed BRCA1 and Its Network of Interacting Partners
title_short BRCA1 and Its Network of Interacting Partners
title_sort brca1 and its network of interacting partners
topic BRCA1
DNA repair damage response
HR
cell cycle checkpoint regulation
phosphorylation
E3 ligase
ubiquitination
url http://www.mdpi.com/2079-7737/2/1/40
work_keys_str_mv AT kyriacoskyriacou brca1anditsnetworkofinteractingpartners
AT charitamchristou brca1anditsnetworkofinteractingpartners