pbh:AAW51_4415 K01749 hydroxymethylbilane synthase [EC:2.5.1.61] | (GenBank) hemC; porphobilinogen deaminase pbh:AAW51_4414 K01719 uroporphyrinogen-III synthase [EC:4.2.1.75] | (GenBank) hemD; uroporphyrinogen-III synthase pbh:AAW51_4413 K02496 uroporphyrin-III C-methyltransferase [EC:2.1.1.107] | (GenBank) hemX; uroporphyrin-III methyltransferase