Phycoerythrobilin synthase

Phycoerythrobilin synthase is an enzyme with systematic name -phycoerythrobilin:ferredoxin oxidoreductase . It catalyses the following chemical reaction
This enzyme, from a cyanophage infecting oceanic cyanobacteria of the Prochlorococcus genus carries out in one step the reduction of biliverdin to -phycoerythrobilin. The same overall reaction results from the action of 15,16-dihydrobiliverdin:ferredoxin oxidoreductase and phycoerythrobilin:ferredoxin oxidoreductase in oxygenic organisms.