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Information on EC - hydrogen peroxide-dependent heme synthase

for references in articles please use BRENDA:EC1.3.98.5
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EC Tree
IUBMB Comments
The enzyme participates in a heme biosynthesis pathway found in Gram-positive bacteria. The initial decarboxylation step is fast and yields the three-propanoate harderoheme isomer III. The second decarboxylation is much slower. cf. EC, SAM-dependent heme synthase.
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Word Map
  • raman
  • decarboxylation
  • propionyl
  • monocytogenes
  • listeria
  • propionates
  • monoderm
  • uv-vis
  • decarboxylases
The enzyme appears in viruses and cellular organisms
Reaction Schemes
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coproheme decarboxylase, coproheme III oxidative decarboxylase, HemQ, more
Fe-coproporphyrin III + 2 H2O2 = protoheme + 2 CO2 + 4 H2O
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overall reaction
Fe-coproporphyrin III + H2O2 = harderoheme III + CO2 + 2 H2O
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harderoheme III + H2O2 = protoheme + CO2 + 2 H2O
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