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1.3.3.4: protoporphyrinogen oxidase

This is an abbreviated version!
For detailed information about protoporphyrinogen oxidase, go to the full flat file.

Word Map on EC 1.3.3.4

Reaction

protoporphyrinogen IX
+ 3 O2 =
protoporphyrin IX
+ 3 H2O2

Synonyms

HemG, HemG-type PPO, HemG-type protoporphyrinogen IX oxidase, hemY, hPPO, H_N10, H_N40, H_N90, LMJF_06_1280, mtPPO, MxPPOX, MxProtox, PPO, PPO1, ppo1-1, PPO2, PPOX, PPOX I, PPX1, PPX2, protein YfeX, protogen oxidase, protoporphyrinogen IX oxidase, protoporphyrinogen IX oxidase 1, protoporphyrinogen oxidase, protoporphyrinogen oxidase IX, protoporphyrinogenase, protox, Protox enzyme, R-PPO, Rs-slr1790 protein, S-PPO, Salk_143057, YfeX

ECTree

     1 Oxidoreductases
         1.3 Acting on the CH-CH group of donors
             1.3.3 With oxygen as acceptor
                1.3.3.4 protoporphyrinogen oxidase

Systematic Name

Systematic Name on EC 1.3.3.4 - protoporphyrinogen oxidase

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SYSTEMATIC NAME
IUBMB Comments
protoporphyrinogen-IX:oxygen oxidoreductase
This is the last common enzyme in the biosynthesis of chlorophylls and heme [8]. Two isoenzymes exist in plants: one in plastids and the other in mitochondria. This is the target enzyme of phthalimide-type and diphenylether-type herbicides [8]. The enzyme from oxygen-dependent species contains FAD [9]. Also slowly oxidizes mesoporphyrinogen IX.