2 H(+) + H2O + urea = CO2 + 2 NH4(+) Nitrogen metabolism; urea degradation; CO(2) and NH(3) from urea (urease route): step 1/1. Heterotrimer of UreA (gamma), UreB (beta) and UreC (alpha) subunits. Three heterotrimers associate to form the active enzyme. The probable operon is induced by urea. Belongs to the urease gamma subunit family.