0 -> AcCoA
AcCoA -> 0
HOAc -> HOAc_E
HOAc_E -> HOAc
AcCoA -> AcP
AcP -> OAc
OAc -> AcP
OAc -> AcCoA
OAc -> HOAc
HOAc -> OAc
0 -> LacI
0 -> Acs
0 -> Pta
LacI -> 0
Acs -> 0
Pta -> 0