{"title":"MnTMPyP/KHSO在双链DNA中的鸟嘌呤氧化(5):至少三个独立的反应途径。","authors":"A Lapi, G Pratviel, B Meunier","doi":"10.1155/MBD.2001.47","DOIUrl":null,"url":null,"abstract":"<p><p>In order to better define the mechanism and the products of guanine oxidation within DNA, we investigated the details of the mechanism of guanine oxidation by a metalloporphyrin, Mn-TMPyP, associated to KHSO(5) on oligonucleotides. We found that the three major products of guanine oxidation are formed by independent reaction routes. The oxidized guanidinohydantoin (1) and the proposed spiro compound 3 derivatives are not precursors of imidazolone lesion (Iz). These guanine lesions as well as their degradation products, may account for non-detected guanine oxidation products on oxidatively damaged DNA.</p>","PeriodicalId":18452,"journal":{"name":"Metal-Based Drugs","volume":"8 1","pages":"47-56"},"PeriodicalIF":0.0000,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/MBD.2001.47","citationCount":"16","resultStr":"{\"title\":\"Guanine Oxidation in Double-stranded DNA by MnTMPyP/KHSO(5): At Least Three Independent Reaction Pathways.\",\"authors\":\"A Lapi, G Pratviel, B Meunier\",\"doi\":\"10.1155/MBD.2001.47\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>In order to better define the mechanism and the products of guanine oxidation within DNA, we investigated the details of the mechanism of guanine oxidation by a metalloporphyrin, Mn-TMPyP, associated to KHSO(5) on oligonucleotides. We found that the three major products of guanine oxidation are formed by independent reaction routes. The oxidized guanidinohydantoin (1) and the proposed spiro compound 3 derivatives are not precursors of imidazolone lesion (Iz). These guanine lesions as well as their degradation products, may account for non-detected guanine oxidation products on oxidatively damaged DNA.</p>\",\"PeriodicalId\":18452,\"journal\":{\"name\":\"Metal-Based Drugs\",\"volume\":\"8 1\",\"pages\":\"47-56\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2001-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1155/MBD.2001.47\",\"citationCount\":\"16\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Metal-Based Drugs\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1155/MBD.2001.47\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metal-Based Drugs","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1155/MBD.2001.47","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Guanine Oxidation in Double-stranded DNA by MnTMPyP/KHSO(5): At Least Three Independent Reaction Pathways.
In order to better define the mechanism and the products of guanine oxidation within DNA, we investigated the details of the mechanism of guanine oxidation by a metalloporphyrin, Mn-TMPyP, associated to KHSO(5) on oligonucleotides. We found that the three major products of guanine oxidation are formed by independent reaction routes. The oxidized guanidinohydantoin (1) and the proposed spiro compound 3 derivatives are not precursors of imidazolone lesion (Iz). These guanine lesions as well as their degradation products, may account for non-detected guanine oxidation products on oxidatively damaged DNA.
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