1.3.7.2	15,16-dihydrobiliverdin:ferredoxin oxidoreductase	phycoerythrobilin biosynthesis I	
1.3.7.3	phycoerythrobilin:ferredoxin oxidoreductase	phycoerythrobilin biosynthesis I	
1.14.15.20	heme oxygenase (biliverdin-producing, ferredoxin)	phycoerythrobilin biosynthesis I