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The role of RecQ helicases in non-homologous end-joining
被引:18
|作者:
Keijzers, Guido
[1
]
Maynard, Scott
[1
]
Shamanna, Raghavendra A.
[2
]
Rasmussen, Lene Juel
[1
]
Croteau, Deborah L.
[2
]
Bohr, Vilhelm A.
[1
,2
]
机构:
[1] Univ Copenhagen, Dept Cellular & Mol Med, Ctr Hlth Aging, Copenhagen, Denmark
[2] NIA, Lab Mol Gerontol, Baltimore, MD 21224 USA
关键词:
Alternative end-joining;
Ku70/80;
microhomology-mediated end-joining;
non-homologous end-joining;
RecQ helicases;
telomere;
DEPENDENT PROTEIN-KINASE;
DOUBLE-STRAND BREAKS;
ROTHMUND-THOMSON-SYNDROME;
WERNER-SYNDROME PROTEIN;
BASE EXCISION-REPAIR;
BLOOMS-SYNDROME PROTEIN;
RNA-POLYMERASE-II;
CLASS SWITCH RECOMBINATION;
SYNDROME GENE-PRODUCT;
LIGASE-IV COMPLEX;
D O I:
10.3109/10409238.2014.942450
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
DNA double-strand breaks are highly toxic DNA lesions that cause genomic instability, if not efficiently repaired. RecQ helicases are a family of highly conserved proteins that maintain genomic stability through their important roles in several DNA repair pathways, including DNA double-strand break repair. Double-strand breaks can be repaired by homologous recombination (HR) using sister chromatids as templates to facilitate precise DNA repair, or by an HR-independent mechanism known as non-homologous end-joining (NHEJ) (error-prone). NHEJ is a non-templated DNA repair process, in which DNA termini are directly ligated. Canonical NHEJ requires DNA-PKcs and Ku70/80, while alternative NHEJ pathways are DNA-PKcs and Ku70/80 independent. This review discusses the role of RecQ helicases in NHEJ, alternative (or back-up) NHEJ (B-NHEJ) and microhomology-mediated end-joining (MMEJ) in V(D)J recombination, class switch recombination and telomere maintenance.
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页码:463 / 472
页数:10
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