The Enzyme Database

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Accepted name: phycoerythrobilin synthase
Reaction: (3Z)-phycoerythrobilin + 2 oxidized ferredoxin = biliverdin IXα + 2 reduced ferredoxin
Other name(s): PebS
Systematic name: (3Z)-phycoerythrobilin:ferredoxin oxidoreductase (from biliverdin IXα)
Comments: This enzyme, from a cyanophage infecting oceanic cyanobacteria of the Prochlorococcus genus, uses a four-electron reduction to carry out the reactions catalysed by EC (15,16-dihydrobiliverdin:ferredoxin oxidoreductase) and EC (phycoerythrobilin:ferredoxin oxidoreductase). 15,16-Dihydrobiliverdin is formed as a bound intermediate. Free 15,16-dihydrobiliverdin can also act as a substrate to form phycoerythrobilin.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB
1.  Dammeyer, T., Bagby, S.C., Sullivan, M.B., Chisholm, S.W. and Frankenberg-Dinkel, N. Efficient phage-mediated pigment biosynthesis in oceanic cyanobacteria. Curr. Biol. 18 (2008) 442–448. [PMID: 18356052]
[EC created 2008]

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