WRNIP1 functions upstream of DNA polymerase η in the UV-induced DNA damage response.
WRNIP1 functions upstream of DNA polymerase η in the UV-induced DNA damage response.
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在紫外线诱导的 DNA 损伤反应中,WRNIP1 在 DNA 聚合酶 η 的上游发挥作用。
DOI:
10.1016/j.bbrc.2014.08.043
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
T.
中科院分区:
文献类型:
--
作者:
Yoshimura;A.;Kobayashi;Y.;Tada;S.;Seki;M.;Enomoto;T.
WRNIP1 (WRN-interacting protein 1) was first identified as a factor that interacts with WRN, the protein that is defective in Werner syndrome (WS). WRNIP1 associates with DNA polymerase η (Polη), but the biological significance of this interaction remains unknown. In this study, we analyzed the functional interaction between WRNIP1 and Polη by generating knockouts of both genes in DT40 chicken cells. Disruption ofWRNIP1in Polη-disrupted (POLH−/−) cells suppressed the phenotypes associated with the loss of Polη: sensitivity to ultraviolet light (UV), delayed repair of cyclobutane pyrimidine dimers (CPD), elevated frequency of mutation, elevated levels of UV-induced sister chromatid exchange (SCE), and reduced rate of fork progression after UV irradiation. These results suggest that WRNIP1 functions upstream of Polη in the response to UV irradiation.
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通讯作者:
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