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.
复制标题

DOI:
10.1016/j.molcel.2012.04.028
复制
发表时间:
2012-07-13
期刊:
影响因子:
16
通讯作者:
Margison, Geoffrey P.
Margison, Geoffrey P.
中科院分区:
生物学1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.

文献摘要

参考文献

被引文献

相似文献

长期以来,人们已知核苷酸切除修复(NER)可去除化学致癌物诱导产生的DNA损伤,其分子机制也已得到部分阐释。在此,我们证明在粟酒裂殖酵母中,一种DNA识别蛋白——类烷基转移酶1(Atl1),在根据DNA修饰的性质选择特定的NER途径方面可发挥关键作用。Atl1从含有较小的O6 - 烷基鸟嘌呤的DNA上相对容易解离,这使得全基因组修复(GGR)能够准确完成;而Atl1与体积较大的O6 - 烷基鸟嘌呤紧密结合,会阻断GGR,使转录机制停滞,并将损伤导向转录偶联修复。我们的研究结果重新描绘了在那些表达类烷基转移酶基因的生物体中NER过程的起始阶段,并引发了一个问题:在高等真核生物中,对于烷基转移酶蛋白而言是较差底物的O6 - 烷基鸟嘌呤损伤,是否类似地会发出信号,指示通过NER进行修复。
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.
DOI: 10.1107/s0907444904019158
发表时间: 2004-12-01
影响因子: 2.2
作者:
Emsley, P;Cowtan, K
通讯作者: Cowtan, K
DOI: 10.1126/science.1135400
发表时间: 2007-02-09
期刊: SCIENCE
影响因子: 56.9
作者:
Brueckner, Florian;Hennecke, Ulrich;Cramer, Patrick
通讯作者: Cramer, Patrick
DOI: 10.1016/s1097-2765(04)00162-5
发表时间: 2004-04-09
期刊: MOLECULAR CELL
影响因子: 16
作者:
Hickman, MJ;Samson, LD
通讯作者: Samson, LD
DOI: 10.1093/emboj/20.21.6115
发表时间: 2001-11-01
期刊: EMBO JOURNAL
影响因子: 11.4
作者:
Kim, SM;Huberman, JA
通讯作者: Huberman, JA
DOI: 10.1016/0027-5107(90)90173-2
发表时间: 1990-07-01
期刊: MUTATION RESEARCH
影响因子: --
作者:
BERANEK, DT
通讯作者: BERANEK, DT