Transcriptional errors and ambiguity resulting from the presence of 1,N6-ethenoadenosine or 3,N4-ethenocytidine in polyribonucleotides
- 1 January 1981
- journal article
- Published by Oxford University Press (OUP) in Nucleic Acids Research
- Vol. 9 (2) , 365-373
- https://doi.org/10.1093/nar/9.2.365
Abstract
1,N6-Ethenoadenosine (epsilon A) and 3,N4-Ethenocytidine (epsilon C) in copolymers with unmodified nucleosides were transcribed using DNA-dependent RNA polymerase in the presence of Mn2+. Nearest neighbor analysis of the products showed that epsilon A directed incorporation of A much greater than U greater than C while epsilon C directed the incorporation of U greater than or equal to A much greater than C Neither directed G into the complementary polymer. Such misincorporations resulting from epsilon A and epsilon C, compounds that are formed in vivo by the carcinogen vinyl chloride, may have a biological role as promutagens.Keywords
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