This is the motif that the two catalyzing enzymes are the same.
i1 : oneSiteModificationB() o1 = S_0+E-->X X-->S_0+E X-->E+S_1 E+S_1-->Y Y-->S_0+E Y-->E+S_1 o1 : ReactionNetwork
To rename species, use substitute(ReactionNetwork,List).
The object oneSiteModificationB is a method function.