1.3.7.5	phycocyanobilin:ferredoxin oxidoreductase	phycoviolobilin biosynthesis	
1.14.15.20	heme oxygenase (biliverdin-producing, ferredoxin)	phycoviolobilin biosynthesis	
4.4.1.31	phycoerythrocyanin alpha-cysteine-84 phycoviolobilin lyase/isomerase	phycoviolobilin biosynthesis