. "At the beginning of this reaction, 1 molecule of 'Double-strand DNA containing an uracil opposite to a guanine', and 1 molecule of 'G/T mismatch-specific thymine DNA glycosylase (EC 3.2.2.-)' are present. At the end of this reaction, 1 molecule of 'TDG glycosylase:uracil complex' is present.

This reaction takes place in the 'nucleus'.
"^^ . . . . . "TDG glycosylase mediated recognition and binding of an uracil opposite to a guanine"^^ . . . .