| Name | hydroxymethylbilane synthase activity |
| ID | GO_0004418 |
| collection_id | Molecular function |
| Description | Catalysis of the reaction: H2O + 4 porphobilinogen = hydroxymethylbilane + 4 NH4. |
| Related synonym | (4-(2-carboxyethyl)-3-(carboxymethyl)pyrrol-2-yl)methyltransferase (hydrolyzing) activity, (4-[2-carboxyethyl]-3-[carboxymethyl]pyrrol-2-yl)methyltransferase (hydrolysing), HMB-synthase activity, porphobilinogen ammonia-lyase (polymerizing), porphobilinogen deaminase activity, porphobilinogen:(4-[2-carboxyethyl]-3-[carboxymethyl]pyrrol-2-yl)methyltransferase (hydrolysing), pre-uroporphyrinogen synthase activity, uroporphyrinogen synthase activity, uroporphyrinogen synthetase activity |
| Comment | Note that this function was formerly EC:4.3.1.8. |
| External URL | |
| Genes |