S. A. Shah

Methylation of ribonucleic acid by the carcinogens dimethyl sulphate, <i>N</i>-methyl-<i>N</i>-nitrosourea and <i>N</i>-methyl-<i>N′</i>-nitro-<i>N</i>-nitrosoguanidine. Comparisons of chemical analyses at the nucleoside and base levels

P.D. Lawley, S. A. Shah · Biochemical Journal · 1972 · 187 citations · Full text

Pharmacy, Biochemistry, Molecular Biology +17

Reaction products from <i>N</i>-methyl-<i>N</i>-nitrosourea and deoxyribonucleic acid containing thymidine residues. Synthesis and identification of a new methylation product, <i>O</i>4-methyl-thymidine

P.D. Lawley, D.J. Orr, S. A. Shah et al. · Biochemical Journal · 1973 · 102 citations · Full text

Pharmacy, Chemistry, Molecular Biology +15

Reaction of alkylating mutagens and carcinogens with nucleic acids: detection and estimation of a small extent of methylation at O-6 of guanine in DNA by methyl methanesulphonate in vitro

P.D. Lawley, S. A. Shah · Chemico-Biological Interactions · 1972 · 75 citations

Pharmacy, Genetics, Molecular Biology +13

Methylation of DNA by 3H-14C-methyl-labelled N-methyl-N-nitrosourea—Evidence for transfer of the intact methyl group

P.D. Lawley, S. A. Shah · Chemico-Biological Interactions · 1973 · 72 citations

Life Sciences, Biochemistry, Molecular Biology +4

Reaction of alkylating mutagens and carcinogens with nucleic acids: N-3 of guanine as a site of alkylation by N-methyl-N-nitrosourea and dimethyl sulphate

P.D. Lawley, D.J. Orr, S. A. Shah · Chemico-Biological Interactions · 1972 · 62 citations

Pharmacy, Biochemistry, Genetics +12