Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 최정윤 | - |
dc.date.accessioned | 2018-05-30T08:13:54Z | - |
dc.date.available | 2018-05-30T08:13:54Z | - |
dc.date.issued | 2006 | - |
dc.identifier.issn | 0893-228X | - |
dc.identifier.other | OAK-3386 | - |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/243429 | - |
dc.description.abstract | 1,N2-Etheno(ε)guanine (ε) is formed in DNA as a result of exposure to certain vinyl monomers (e.g., vinyl chloride) or from lipid peroxidation. This lesion has been shown to be mutagenic in bacteria and mammalian cells. 1,N2-ε-G has been shown to block several model replicative DNA polymerases (pols), with limited bypass. Recently, an archebacterial DNA pol, Sulfolobus solfataricus Dpo4, has been shown to copy past 1,N2-ε-G. In this study, we examined the abilities of recombinant, full-length human pol δ and three human translesion DNA pols to copy past 1,N2-ε-G. The replicative pol, pol δ, was completely blocked. Pols ι and κ showed similar rates of incorporation of dTTP and dCTP. Pol η was clearly the most active of these pols in copying past 1,N2-ε-G, incorporating in the order dGTP > dATP > dCTP, regardless of whether the base 5′ of 1,N 2-ε-G in the template was C or T. Pol η also had the highest error frequency opposite 1,N2-ε-G. Analysis of the extended products of the pol η reactions by mass spectrometry indicated only two products, both of which had G incorporated opposite 1,N2-ε-G and all other base pairing being normal (i.e., G:C and A:T). One-half of the products contained an additional A at the 3′-end, presumably arising from a noninformational blunt end addition or possibly a slipped insertion mechanism at the end of the primer-template replication process. In summary, the most efficient of the four human DNA pols was pol η, which appeared to insert G opposite 1,N2-ε-G and then copy correctly. This pattern differs with the same oligonucleotide sequences and 1,N2-ε-G observed using Dpo4, emphasizing the importance of pols in mutagenesis events. © 2006 American Chemical Society. | - |
dc.language | English | - |
dc.title | Translesion synthesis across 1,N2-ethenoguanine by human DNA polymerases | - |
dc.type | Article | - |
dc.relation.issue | 6 | - |
dc.relation.volume | 19 | - |
dc.relation.index | SCI | - |
dc.relation.index | SCIE | - |
dc.relation.index | SCOPUS | - |
dc.relation.startpage | 879 | - |
dc.relation.lastpage | 886 | - |
dc.relation.journaltitle | Chemical Research in Toxicology | - |
dc.identifier.doi | 10.1021/tx060051v | - |
dc.identifier.wosid | WOS:000238323200020 | - |
dc.identifier.scopusid | 2-s2.0-33745321163 | - |
dc.author.google | Choi J.-Y. | - |
dc.author.google | Zang H. | - |
dc.author.google | Angel K.C. | - |
dc.author.google | Kozekov I.D. | - |
dc.author.google | Goodenough A.K. | - |
dc.author.google | Rizzo C.J. | - |
dc.author.google | Guengerich F.P. | - |
dc.contributor.scopusid | 최정윤(57223660142;34973862000) | - |
dc.date.modifydate | 20230627091252 | - |