BRENDA: BR11718; BS364273
KEGG: R03893; R06838
MetaCyc: CARBOXYMETHYLENEBUTENOLIDASE-RXN; RXN-9868
KEGG: R04500
MetaCyc: RXN-9893
KEGG: R05391
MetaCyc: RXN-10087
MetaCyc: RXN-10124
BRENDA: BS399536
BRENDA: BS407984
BRENDA: BS1272