1.13.12.6 Cypridina-luciferin 2-monooxygenase - 1.13.12.7 firefly luciferase - 1.13.12.8 Watasenia-luciferin 2-monooxygenase - 1.13.12.9 phenylalanine 2-monooxygenase - 1.13.12.B5 Arachnocampa luciferase preliminary BRENDA-supplied EC number