期刊
ANTIOXIDANTS & REDOX SIGNALING
卷 14, 期 12, 页码 2509-2519出版社
MARY ANN LIEBERT INC
DOI: 10.1089/ars.2010.3429
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资金
- Public Health Service (PHS) [CA 97096]
- Leukemia and Lymphoma Society
Repair of double-strand breaks in chromosomal DNA is essential. Unfortunately, a paradigm central to most DNA repair pathways-damaged DNA is replaced by polymerases, by using an intact, undamaged complementary strand as a template-no longer works. The nonhomologous end joining (NHEJ) pathway nevertheless still uses DNA polymerases to help repair double-strand breaks. Bacteria use a member of the archaeo-eukaryal primase superfamily, whereas eukaryotes use multiple members of the polymerase X family. These polymerases can, depending on the biologic context, accurately replace break-associated damage, mitigate loss of flanking DNA, or diversify products of repair. Polymerases specifically implicated in NHEJ are uniquely effective in these roles: relative to canonic polymerases, NHEJ polymerases have been engineered to do more with less. Antioxid. Redox Signal. 14, 2509-2519.
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