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1.3.5.3: protoporphyrinogen IX dehydrogenase (quinone)

This is an abbreviated version!
For detailed information about protoporphyrinogen IX dehydrogenase (quinone), go to the full flat file.

Reaction

protoporphyrinogen IX
+ 3 quinone =
protoporphyrin IX
+ 3 quinol

Synonyms

HemG, HemG protein, PPO, PPOX, PPX, PPX1, protogen oxidase, protoporphyrinogen IX dehydrogenase (menaquinone), protoporphyrinogen IX oxidase

ECTree

     1 Oxidoreductases
         1.3 Acting on the CH-CH group of donors
             1.3.5 With a quinone or related compound as acceptor
                1.3.5.3 protoporphyrinogen IX dehydrogenase (quinone)

General Information

General Information on EC 1.3.5.3 - protoporphyrinogen IX dehydrogenase (quinone)

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GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
physiological function
-
the FMN enzyme protoporphyrinogen IX oxidase (HemG) of Escherichia coli abstracts six electrons from its substrate and transfers them via ubiquinone, cytochrome bo3 and cytochrome bd oxidase to oxygen. Under anaerobic conditions electrons are transferred via menaquinone, fumarate and nitrate reductase. Cytochrome bo3 , cytochrome bd, and nitrate reductase contribute to the proton motive force that drives ATP formation
additional information
-
detailed model of heme biosynthesis coupled energy generation, overview