Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Zafer Hatahet"'
Autor:
Richard E. Honkanen, Kai Ming Chou, Zafer Hatahet, Jang Yang Chang, Yun Yen, James E. Cleaver, Yih Wen Chen
Publikováno v:
Proceedings of the National Academy of Sciences. 105:16578-16583
Human DNA polymerase eta (pol eta) can replicate across UV-induced pyrimidine dimers, and defects in the gene encoding pol eta result in a syndrome called xeroderma pigmentosum variant (XP-V). XP-V patients are prone to the development of cancer in s
Publikováno v:
Proceedings of the National Academy of Sciences. 112
Obesity and the metabolic syndrome have evolved to be major health issues throughout the world. Whether loss of genome integrity contributes to this epidemic is an open question. DNA polymerase η (pol η), encoded by the xeroderma pigmentosum (XP-V)
Publikováno v:
Journal of Molecular Biology. 290:667-684
When ionizing radiation traverses a DNA molecule, a combination of two or more base damages, sites of base loss or single strand breaks can be produced within 1–4 nm on opposite DNA strands, forming a multiply damaged site (MDS). In this study, we
Publikováno v:
Europe PubMed Central
Escherichia coli possesses two DNA glycosylase/apurinic lyase activities with overlapping substrate specificities, endonuclease III and endonuclease VIII, that recognize and remove oxidized pyrimidines from DNA. Endonuclease III is encoded by the nth
Publikováno v:
Journal of Biological Chemistry. 269:18814-18820
5-Hydroxy-2'-deoxycytidine (5-OHdC) and 5-hydroxy-2'-deoxyuridine (5-OHdU) are major products of oxidative DNA damage with mutagenic potential. Until now, no enzymatic activity responsible for their removal has been identified. We report here that bo
Publikováno v:
Journal of Biological Chemistry. 269:16260-16268
We have purified a novel endonuclease from Escherichia coli that recognizes deoxyinosine, a deamination product of deoxyadenosine in DNA. This activity, which we named deoxyinosine 3' endonuclease, is different from the known hypoxanthine DNA N-glyco
Publikováno v:
Biochemistry. 33:1255-1264
Endonuclease VIII, a novel presumptive DNA repair enzyme, was isolated from Escherichia coli by FPLC1 purification. The enzyme was found in strains that contained or lacked endonuclease III and was purified by radial flow S-Sepharose, Mono S, phenyl-
Publikováno v:
Journal of Molecular Biology. 236:514-530
Free radicals produce a broad spectrum of damages to DNA, a major proportion of which includes ring fragmentation and contraction products of DNA bases as well as abasic sites. In this study, the mutagenic potential fo two pyrimidine ring fragmentati
Autor:
Zafer Hatahet, Margaret Maccabee, Justin Courcelle, Susan S. Wallace, Richard Bockrath, Janet Evans, Hirioshi Ide
Publikováno v:
Mutation Research/Genetic Toxicology. 299:147-156
We have used thymine glycol and dihydrothymine as representative ring saturation products resulting from free-radical interaction with DNA pyrimidines, and urea glycosides and beta-ureidoisobutyric acid (UBA) as models for pyrimidine-ring fragmentati
Publikováno v:
Journal of Biological Chemistry. 266:1469-1477
The processing of unrepaired DNA lesions is a key to understanding and predicting the biological end points of particular DNA damages. In this study, we prepared single-stranded f1 phage (f1-K12) DNA containing dihydrothymine or beta-ureidoisobutyric