thumb|Imidazol-4-one-5-propionic acid
thumb|Imidazol-4-one-5-propionic acid
Urocanase (also known as imidazolonepropionate hydrolase or urocanate hydratase) is the enzyme (EC 4.2.1.49) that catalyzes the second step in the degradation of histidine, the hydration of urocanate into imidazolonepropionate.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).