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Critical Reviews™ in Eukaryotic Gene Expression
Fator do impacto: 2.156 FI de cinco anos: 2.255 SJR: 0.649 SNIP: 0.599 CiteScore™: 3

ISSN Imprimir: 1045-4403
ISSN On-line: 2162-6502

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Critical Reviews™ in Eukaryotic Gene Expression

DOI: 10.1615/CritRevEukarGeneExpr.v6.i4.20
pages 345-375

Regulation and Repair of Double-Strand DNA Breaks

David T. Weaver
Division of Tumor Immunology, Dana-Farber Cancer Institute, 44 Binney St., Boston, MA 02115 and Department of Microbiology and Molecular Genetics, Harvard Medical School, Boston, MA 02115

RESUMO

Double-strand break (DSB) repair in mammalian cells involves the DNA-dependent protein kinase (DNA-PK). DNA-PK is composed of three subunits, a catalytic kinase subunit (DNA-PKcs) mutated in the mouse scid complementation group and the Ku heterodimer. Ku-deficient and DNA-PKcs-deficient cell lines and an animal model have illuminated important features of the DSB repair pathway. Additional factors relevant to several essential functions of DNA replication may point to some overlap between DNA synthesis and DNA repair in eukaryotes. The DNA-PK complex may have broader functions based on its possible involvement in transcriptional regulation and cell cycle checkpoints.


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