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10.3390/ijms21207645

http://scihub22266oqcxt.onion/10.3390/ijms21207645
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33076559!7589758!33076559
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suck abstract from ncbi


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pmid33076559      Int+J+Mol+Sci 2020 ; 21 (20): ä
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  • Products of Oxidative Guanine Damage Form Base Pairs with Guanine #MMPMID33076559
  • Kino K; Kawada T; Hirao-Suzuki M; Morikawa M; Miyazawa H
  • Int J Mol Sci 2020[Oct]; 21 (20): ä PMID33076559show ga
  • Among the natural bases, guanine is the most oxidizable base. The damage caused by oxidation of guanine, commonly referred to as oxidative guanine damage, results in the formation of several products, including 2,5-diamino-4H-imidazol-4-one (Iz), 2,2,4-triamino-5(2H)-oxazolone (Oz), guanidinoformimine (Gf), guanidinohydantoin/iminoallantoin (Gh/Ia), spiroiminodihydantoin (Sp), 5-carboxamido-5-formamido-2-iminohydantoin (2Ih), urea (Ua), 5-guanidino-4-nitroimidazole (NI), spirodi(iminohydantoin) (5-Si and 8-Si), triazine, the M+7 product, other products by peroxynitrite, alkylated guanines, and 8,5'-cyclo-2'-deoxyguanosine (cG). Herein, we summarize the present knowledge about base pairs containing the products of oxidative guanine damage and guanine. Of these products, Iz is involved in G-C transversions. Oz, Gh/Ia, and Sp form preferably Oz:G, Gh/Ia:G, and Sp:G base pairs in some cases. An involvement of Gf, 2Ih, Ua, 5-Si, 8-Si, triazine, the M+7 product, and 4-hydroxy-2,5-dioxo-imidazolidine-4-carboxylic acid (HICA) in G-C transversions requires further experiments. In addition, we describe base pairs that target the RNA-dependent RNA polymerase (RdRp) of RNA viruses and describe implications for the 2019 novel coronavirus (SARS-CoV-2): When products of oxidative guanine damage are adapted for the ribonucleoside analogs, mimics of oxidative guanine damages, which can form base pairs, may become antiviral agents for SARS-CoV-2.
  • |*Base Pairing[MESH]
  • |*Point Mutation[MESH]
  • |Animals[MESH]
  • |Betacoronavirus/genetics[MESH]
  • |DNA Damage[MESH]
  • |Guanine/*analogs & derivatives/metabolism[MESH]
  • |Humans[MESH]
  • |Oxidation-Reduction[MESH]


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