Tarisa ndima iri pasi apa uye wozopindura mubvunzo unotevera mumutauro mumwechete sezvinotaurwa mundima iyi: Passage: MuNitrosomonas europaea, danho rekutanga rekuita oxidation (ammonia ku hydroxylamine) rinoitwa ne enzyme ammonia monooxygenase (AMO).
enzyme ammonia monooxygenase