KEGG   ENZYME: 1.3.7.6Help
Entry
EC 1.3.7.6                  Enzyme                                 

Name
phycoerythrobilin synthase;
PebS
Class
Oxidoreductases;
Acting on the CH-CH group of donors;
With an iron-sulfur protein as acceptor
BRITE hierarchy
Sysname
(3Z)-phycoerythrobilin:ferredoxin oxidoreductase (from biliverdin IXalpha)
Reaction(IUBMB)
(3Z)-phycoerythrobilin + 2 oxidized ferredoxin = biliverdin IXalpha + 2 reduced ferredoxin [RN:R09491]
Reaction(KEGG)
Substrate
(3Z)-phycoerythrobilin [CPD:C05912];
oxidized ferredoxin [CPD:C00139]
Product
biliverdin IXalpha;
reduced ferredoxin [CPD:C00138]
Comment
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 1.3.7.2 (15,16-dihydrobiliverdin:ferredoxin oxidoreductase) and EC 1.3.7.3 (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.
History
EC 1.3.7.6 created 2008
Reference
1  [PMID:18356052]
  Authors
Dammeyer T, Bagby SC, Sullivan MB, Chisholm SW, Frankenberg-Dinkel N.
  Title
Efficient phage-mediated pigment biosynthesis in oceanic cyanobacteria.
  Journal
Curr. Biol. 18 (2008) 442-8.
  Sequence
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 

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