. "At the beginning of this reaction, 1 molecule of 'phosphorylated Cdc6', 1 molecule of 'ubiquitin', and 1 molecule of 'ATP' are present. At the end of this reaction, 1 molecule of 'ubiquitinated Cdc6' is present.

This reaction takes place in the 'cytosol' and is mediated by the 'endopeptidase activity' of 'anaphase-promoting complex (APC)'.
"^^ . . . . . . "Cytoplasmic phosphorylated Cdc6 is ubiquitinated by the anaphase-promoting complex"^^ . . . . .