Guanine + H2O => Xanthine + NH4+ (Dictyostelium discoideum)
guanine + h2o => xanthine + nh4+ (dictyostelium discoideum)
Guanine + H2O => Xanthine + NH4+ (Dictyostelium discoideum)
guanine + h2o => xanthine + nh4+ (dictyostelium discoideum)