Variation of the ratio between DMC alpha adducts and beta adducts (log (([2a]+[3a])/([2b]+[3b]))) formed under bifunctional conditions according to DNA C-G content. Data are taken from experiments with oligonucleotides 20, 21, 24, 25 (9% C-G), with calf thymus DNA (42% C-G), oligonucleotides with a 50% CG content,26
M. Luteus DNA (76% C-G content) and oligonucleotide 31 (100% C-G content). Blue diamonds represent the ratio 2b/3b for 0 °C reactions (only monoadducts formed) and red squares represent the ratio (2b+3b)/(2a+3a) for 37 °C reactions (monoadducts and crosslinks formed).