phytochromobilin:ferredoxin oxidoreductase

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Word Map on EC


+ 2 oxidized ferredoxin =
biliverdin IXalpha
+ 2 reduced ferredoxin


3Z-phytochromobilin:ferredoxin oxidoreductase, At3g09150, HT-HY2, HY2, PFB synthase, phytochromobilin synthase, PphiB synthase, ZMHy2


     1 Oxidoreductases
         1.3 Acting on the CH-CH group of donors
             1.3.7 With an iron-sulfur protein as acceptor
       phytochromobilin:ferredoxin oxidoreductase

Systematic Name

Systematic Name on EC - phytochromobilin:ferredoxin oxidoreductase

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IUBMB Comments
(3Z)-phytochromobilin:ferredoxin oxidoreductase
Catalyses the two-electron reduction of biliverdin IXalpha. Can use [2Fe-2S] ferredoxins from a number of sources as acceptor but not the [4Fe-4S] ferredoxin from Clostridium pasteurianum. The isomerization of (3Z)-phytochromobilin to (3E)-phytochromobilin is thought to occur prior to covalent attachment to apophytochrome in the plant cell cytoplasm. Flavodoxins can be used instead of ferredoxin.