Involved in the degradation of thiocyanate. 2 H(+) + H2O + thiocyanate = carbonyl sulfide + NH4(+) Binds 1 Co(3+) ion per subunit. Organosulfur degradation; thiocyanate degradation. Heterododecamer consisting of 4 alpha, 4 beta, and 4 gamma subunits. Belongs to the nitrile hydratase subunit alpha family.