ID   1.3.7.4
DE   phytochromobilin:ferredoxin oxidoreductase.
AN   PFB synthase.
AN   phytochromobilin synthase.
AN   PPhiB synthase.
CA   (3Z)-phytochromobilin + 2 oxidized [2Fe-2S]-[ferredoxin] = biliverdin
CA   IXalpha + 2 H(+) + 2 reduced [2Fe-2S]-[ferredoxin].
CC   -!- Catalyzes the two-electron reduction of biliverdin IXalpha.
CC   -!- Can use [2Fe-2S] ferredoxins from a number of sources as acceptor but
CC       not the [4Fe-4S] ferredoxin from Clostridium pasteurianum.
CC   -!- The isomerization of (3Z)-phytochromobilin to (3E)-phytochromobilin
CC       is thought to occur prior to covalent attachment to apophytochrome in
CC       the plant cell cytoplasm.
CC   -!- Flavodoxins can be used instead of ferredoxin.
DR   Q9SR43, PFBS_ARATH ;
//