USP47 is a deubiquitylating enzyme that regulates base excision repair by controlling steady-state levels of DNA polymerase ß.
Mol Cell
; 41(5): 609-15, 2011 Mar 04.
Article
em En
| MEDLINE
| ID: mdl-21362556
ABSTRACT
DNA base excision repair (BER) is an essential cellular process required for genome stability, and misregulation of BER is linked to premature aging, increased rate of mutagenesis, and cancer. We have now identified the cytoplasmic ubiquitin-specific protease USP47 as the major enzyme involved in deubiquitylation of the key BER DNA polymerase (Pol ß) and demonstrate that USP47 is required for stability of newly synthesized cytoplasmic Pol ß that is used as a source for nuclear Pol ß involved in DNA repair. We further show that knockdown of USP47 causes an increased level of ubiquitylated Pol ß, decreased levels of Pol ß, and a subsequent deficiency in BER, leading to accumulation of DNA strand breaks and decreased cell viability in response to DNA damage. Taken together, these data demonstrate an important role for USP47 in regulating DNA repair and maintaining genome integrity.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Regulação Enzimológica da Expressão Gênica
/
DNA Polimerase beta
/
Ubiquitina
/
Ubiquitina Tiolesterase
/
Reparo do DNA
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
Mol Cell
Assunto da revista:
BIOLOGIA MOLECULAR
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Reino Unido