Heme, porphyrin, and cobalamin

hypothetical protein (RefSeq)

coproporphyrinogen III oxidase (RefSeq)

nicotinate-nucleotide--dimethylbenzimidazole phosphoribosyltransferase (RefSeq)

uroporphyrinogen III synthase/methyltransferase (RefSeq)

protoheme IX farnesyltransferase (RefSeq)

ferrochelatase (RefSeq)

glutamate-1-semialdehyde aminotransferase (RefSeq)

protoporphyrinogen oxidase (RefSeq)

uroporphyrinogen decarboxylase (RefSeq)

porphobilinogen deaminase (RefSeq)