DNA polymerase beta participates in DNA End-joining.
DNA polymerase beta participates in DNA End-joining.
复制标题
DOI:
10.1093/nar/gkx1147
复制
发表时间:
2018-01-09
影响因子:
14.9
通讯作者:
Sweasy JB
中科院分区:
文献类型:
--
作者:
Ray S;Breuer G;DeVeaux M;Zelterman D;Bindra R;Sweasy JB
DNA double strand breaks (DSBs) are one of the most deleterious lesions and if left unrepaired, they lead to cell death, genomic instability and carcinogenesis. Cells combat DSBs by two pathways: homologous recombination (HR) and non-homologous end-joining (NHEJ), wherein the two DNA ends are re-joined. Recently a back-up NHEJ pathway has been reported and is referred to as alternative NHEJ (aNHEJ), which joins ends but results in deletions and insertions. NHEJ requires processing enzymes including nucleases and polymerases, although the roles of these enzymes are poorly understood. Emerging evidence indicates that X family DNA polymerases lambda (Pol λ) and mu (Pol μ) promote DNA end-joining. Here, we show that DNA polymerase beta (Pol β), another member of the X family of DNA polymerases, plays a role in aNHEJ. In the absence of DNA Pol β, fewer small deletions are observed. In addition, depletion of Pol β results in cellular sensitivity to bleomycin and DNA protein kinase catalytic subunit inhibitors due to defective repair of DSBs. In summary, our results indicate that Pol β in functions in aNHEJ and provide mechanistic insight into its role in this process.
登录
查看更多内容
影响因子:
16.8
作者:
通讯作者:
--
影响因子:
16
作者:
Jiang W;Crowe JL;Liu X;Nakajima S;Wang Y;Li C;Lee BJ;Dubois RL;Liu C;Yu X;Lan L;Zha S
通讯作者:
Zha S
影响因子:
48
作者:
Langmead, Ben;Salzberg, Steven L.
通讯作者:
Salzberg, Steven L.
影响因子:
--
作者:
Brandsma I;Gent DC
通讯作者:
Gent DC
影响因子:
16.8
作者:
Kent, Tatiana;Chandramouly, Gurushankar;McDevitt, Shane Michael;Ozdemir, Ahmet Y.;Pomerantz, Richard T.
通讯作者:
Pomerantz, Richard T.