11. The oxygenase domain is a unique extended beta sheet cage with binding sites for heme and pterin. 12. NovJ and NovK form a heterodimer of J2K2 which is the active form of this benzylic oxygenase . 13. Sulfur oxidizers utilize enzymes such as sulfur oxygenase and sulfite oxidase to oxidize sulfur compounds to sulfate. 14. This enzyme is an iron ( II ) and 2-oxoglutarate ( 20G ) dependent oxygenase . 15. When molecular oxygen is the substrate, the products of the oxygenase reaction are phosphoglycolate and 3-phosphoglycerate. 16. In hydroxylating bacterial dioxygenase systems, they serve as intermediate electron-transfer carriers between reductase flavoproteins and oxygenase . 17. Heme oxygenase occurs as 2 isozymes, an inducible heme oxygenase-1 and a constitutive heme oxygenase-2. 18. Heme oxygenase occurs as 2 isozymes, an inducible heme oxygenase -1 and a constitutive heme oxygenase-2. 19. Heme oxygenase occurs as 2 isozymes, an inducible heme oxygenase-1 and a constitutive heme oxygenase -2. 20. LKM-1 antibodies associated with autoimmune chronic active hepatitis recognize P450 2D6, a cytochrome P450 mono-oxygenase .