. "At the beginning of this reaction, 1 molecule of 'hNTH1', and 1 molecule of 'Double-strand DNA containing a dihydrouracil' are present. At the end of this reaction, 1 molecule of 'hNTH1 glycosylase:dihydrouracil complex' is present.

This reaction takes place in the 'nucleus'.
"^^ . . . . . "hNTH1 glycosylase mediated recognition and binding of dihydrouracil"^^ . . . . . .