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heme metabolism

State Icon Reaction EC-Number Confidence maximal confidence score from EnzymeDetector
(S)-4-Amino-5-oxopentanoate + NADP+ + tRNAMet <=> Glu-tRNAGln + NADPH + H+ 1.2.1.70 glutamyl-tRNA reductase

heme + 3 reduced_flavodoxin + 3 O2 <=> Biliverdin + Fe2+ + CO + 3 flavin + 3 H2O 1.14.14.18 heme oxygenase (biliverdin-producing)
1.14.99.58 heme oxygenase (biliverdin-IX-beta and delta-forming)


sirohydrochlorin + Fe2+ <=> H+ + siroheme 4.99.1.3 sirohydrochlorin cobaltochelatase
4.99.1.4 sirohydrochlorin ferrochelatase


H+ + glycine + succinyl-CoA <=> CO2 + CoA + 5-aminolevulinate 2.3.1.37 5-aminolevulinate synthase

Fe-coproporphyrin_III + H2O2 + H+ <=> heme + CO2 + H2O 1.3.98.5 hydrogen peroxide-dependent heme synthase

siroheme + H+ <=> 12,18-didecarboxysiroheme + CO2 4.1.1.111 siroheme decarboxylase

S-adenosyl-L-methionine + Coproporphyrinogen-III <=> protoporphyrinogen-IX + CO2 + L-methionine + 5''-deoxyadenosine 1.3.98.3 coproporphyrinogen dehydrogenase

Hydroxymethylbilane <=> uroporphyrinogen_III + H2O 4.2.1.75 uroporphyrinogen-III synthase

S-adenosyl-L-methionine + precorrin-1 <=> S-adenosyl-L-homocysteine + precorrin-2 2.1.1.107 uroporphyrinogen-III C-methyltransferase

precorrin-2 + NAD+ <=> H+ + sirohydrochlorin + NADH 1.3.1.76 precorrin-2 dehydrogenase

protoporphyrinogen-IX + O2 <=> protoporphyrin_IX + H2O2 1.3.3.4 protoporphyrinogen oxidase

(S)-4-Amino-5-oxopentanoate <=> 5-aminolevulinate 5.4.3.8 glutamate-1-semialdehyde 2,1-aminomutase

protoporphyrinogen-IX + 3 1,4-benzoquinone <=> protoporphyrin_IX + 3 hydroquinone 1.3.5.3 protoporphyrinogen IX dehydrogenase (quinone)

uroporphyrinogen_III + H+ <=> Coproporphyrinogen-III + CO2 4.1.1.37 uroporphyrinogen decarboxylase

S-adenosyl-L-methionine + uroporphyrinogen_III <=> H+ + S-adenosyl-L-homocysteine + precorrin-1 2.1.1.107 uroporphyrinogen-III C-methyltransferase

5-aminolevulinate <=> H+ + H2O + porphobilinogen 4.2.1.24 porphobilinogen synthase

Coproporphyrinogen-III + O2 + H+ <=> protoporphyrinogen-IX + CO2 + H2O 1.3.3.3 coproporphyrinogen oxidase

porphobilinogen + H2O <=> Hydroxymethylbilane + NH3 2.5.1.61 hydroxymethylbilane synthase

L-Histidinol_phosphate + 2-oxoglutarate <=> 3-(Imidazol-4-yl)-2-oxopropyl_phosphate + L-glutamate 2.6.1.9 histidinol-phosphate transaminase

heme + H+ <=> protoporphyrin_IX + Fe2+ 4.99.1.1 protoporphyrin ferrochelatase
4.99.1.9 coproporphyrin ferrochelatase


NADP+ + bilirubin <=> Biliverdin + NADPH + H+ 1.3.1.24 biliverdin reductase

Visualization of the pathway