1.1.1.330	very-long-chain 3-oxoacyl-CoA reductase	(4Z,7Z,10Z,13Z,16Z)-docosa-4,7,10,13,16-pentaenoate biosynthesis II (4-desaturase)	
1.3.1.93	very-long-chain enoyl-CoA reductase	(4Z,7Z,10Z,13Z,16Z)-docosa-4,7,10,13,16-pentaenoate biosynthesis II (4-desaturase)	
4.2.1.134	very-long-chain (3R)-3-hydroxyacyl-CoA dehydratase	(4Z,7Z,10Z,13Z,16Z)-docosa-4,7,10,13,16-pentaenoate biosynthesis II (4-desaturase)