PMID- 6161706 OWN - NLM STAT- MEDLINE DCOM- 19810424 LR - 20190825 IS - 0009-2797 (Print) IS - 0009-2797 (Linking) VI - 34 IP - 1 DP - 1981 Feb TI - Arylhydroxylamine-induced ribonucleic acid chain cleavage and chromatographic analysis of arylamine-ribonucleic acid adducts. PG - 109-24 AB - Reaction of N-hydroxy-2-aminofluorene (N-OH-AF) with rRNA at pH 5.0 decreased the molecular weight of the polynucleotide. Toluene-soluble aryl derivatives were released on hydrolysis of fluorenylamine- and biphenylamine-substituted RNA by treatment with venom phosphodiesterase and alkaline phosphatase. These data suggested that arylhydroxylamines, activated by incubation at pH 5.0 or by enzymatic O-acetylation, might react with the phosphate group of RNA to give unstable phosphate triesters. Spontaneous hydrolysis of these triesters would result in cleavage of the polynucleotide chain. Further enzymatic hydrolysis of the phosphate esters would yield nonpolar arylamine derivatives. Enzymatically degraded 4-aminobiphenyl(ABP)-RNA adducts were examined by high performance liquid chromatography (HPLC) for the presence of a putative phosphorylated adduct. Synthetic standards of the C-8-guanosine monophosphate-ABP adduct (ABP-GMP) and o-aminobiphenyl-O-phosphate were used as markers in the analysis of the digested RNA. A phosphate adduct of ABP was undetectable by these methods. The data also indicated that the ABP-GMP formed in the acyltransferase-mediated binding of N-hydroxy-4-acetylaminobiphenyl (N-OH-AABP) to RNA is readily degraded during the enzymatic digestion of the RNA adduct. FAU - Vaught, J B AU - Vaught JB FAU - Lee, M S AU - Lee MS FAU - Shayman, M A AU - Shayman MA FAU - Thissen, M R AU - Thissen MR FAU - King, C M AU - King CM LA - eng GR - CA23386/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - Ireland TA - Chem Biol Interact JT - Chemico-biological interactions JID - 0227276 RN - 0 (Amines) RN - 0 (Aminobiphenyl Compounds) RN - 0 (Fluorenes) RN - 0 (Hydroxylamines) RN - 63231-63-0 (RNA) RN - 85-32-5 (Guanosine Monophosphate) SB - IM MH - Amines/*metabolism MH - Aminobiphenyl Compounds/metabolism MH - Centrifugation, Density Gradient MH - Chromatography, High Pressure Liquid MH - Fluorenes/metabolism MH - Guanosine Monophosphate/metabolism MH - Hydroxylamines/*metabolism MH - RNA/*metabolism EDAT- 1981/02/01 00:00 MHDA- 1981/02/01 00:01 CRDT- 1981/02/01 00:00 PHST- 1981/02/01 00:00 [pubmed] PHST- 1981/02/01 00:01 [medline] PHST- 1981/02/01 00:00 [entrez] AID - 0009-2797(81)90095-8 [pii] AID - 10.1016/0009-2797(81)90095-8 [doi] PST - ppublish SO - Chem Biol Interact. 1981 Feb;34(1):109-24. doi: 10.1016/0009-2797(81)90095-8.