BRENDA: BR33677
KEGG: R03520
MetaCyc: 1.1.1.231-RXN
BRENDA: BR6442
KEGG: R02267
MetaCyc: PROSTAGLANDIN-I-SYNTHASE-RXN
SABIO-RK: 2234
KEGG: R03521
BRENDA: BS187212
BRENDA: BS37515