| Protein | Synonyms | Taxonomy |
|---|
| Porphobilinogen deaminase | PBG-D; EC 2.5.1.61; Hydroxymethylbilane synthase; HMBS; Pre-uroporphyrinogen synthase | Homo sapiens (human) |
| 5-aminolevulinate synthase, erythroid-specific, mitochondrial | ALAS-E; EC 2.3.1.37; 5-aminolevulinic acid synthase 2; Delta-ALA synthase 2; Delta-aminolevulinate synthase 2 | Homo sapiens (human) |
| Delta-aminolevulinic acid dehydratase | ALADH; EC 4.2.1.24; Porphobilinogen synthase | Homo sapiens (human) |
| Uroporphyrinogen-III synthase | UROIIIS; UROS; EC 4.2.1.75; Hydroxymethylbilane hydrolyase [cyclizing]; Uroporphyrinogen-III cosynthase | Homo sapiens (human) |
| 5-aminolevulinate synthase, nonspecific, mitochondrial | ALAS-H; EC 2.3.1.37; 5-aminolevulinic acid synthase 1; Delta-ALA synthase 1; Delta-aminolevulinate synthase 1 | Homo sapiens (human) |