Atl1 regulates choice between global genome and transcription-coupled repair of O(6)-alkylguanines.
Atl1 regulates choice between global genome and transcription-coupled repair of O(6)-alkylguanines.
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DOI:
10.1016/j.molcel.2012.04.028
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发表时间:
2012-07-13
期刊:
影响因子:
16
通讯作者:
Margison, Geoffrey P.
中科院分区:
文献类型:
--
作者:
Latypov, Vitaly F.;Tubbs, Julie L.;Watson, Amanda J.;Marriott, Andrew S.;McGown, Gail;Thorncroft, Mary;Wilkinson, Oliver J.;Senthong, Pattama;Butt, Amna;Arvai, Andrew S.;Millington, Christopher L.;Povey, Andrew C.;Williams, David M.;Santibanez-Koref, Mauro F.;Tainer, John A.;Margison, Geoffrey P.
Nucleotide excision repair (NER) has long been known to remove DNA lesions induced by chemical carcinogens, and the molecular mechanism has been partially elucidated. Here we demonstrate that in S.pombe a DNA recognition protein, alkyltransferase-like 1 (Atl1), can play a pivotal role in selecting a specific NER pathway dependent on the nature of the DNA modification. The relative ease of dissociation of Atl1 from DNA containing small O6-alkylguanines allows accurate completion of global genome repair (GGR), whereas strong Atl1 binding to bulky O6-alkylguanines blocks GGR, stalls the transcription machinery and diverts the damage to transcription-coupled repair. Our findings redraw the initial stages of the NER process in those organisms that express an alkyltransferase-like gene and raise the question of whether or not O6-alkylguanine lesions that are poor substrates for the alkyltransferase proteins in higher eukaryotes might, by analogy, signal such lesions for repair by NER.
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DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
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通讯作者:
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影响因子:
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DOI:
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发表时间:
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期刊:
MUTATION RESEARCH
影响因子:
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作者:
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通讯作者:
BERANEK, DT