2.7.2.2 ATP + carbamate = ADP + carbamoyl phosphate (1a) - 2.7.2.2 ATP + NH3 + hydrogencarbonate = ADP + carbamoyl phosphate + H2O comparison of carbamate kinases and carbamoyl phosphate synthases 642233 2.7.2.2 ATP + NH3 + hydrogencarbonate = ADP + carbamoyl phosphate + H2O mechanism -, 642219, 642223, 642225, 642226, 642229 2.7.2.2 ATP + NH3 + hydrogencarbonate = ADP + carbamoyl phosphate + H2O overall reaction - 2.7.2.2 ATP + NH3 + hydrogencarbonate = ADP + carbamoyl phosphate + H2O random type reaction mechanism 642221 2.7.2.2 ATP + NH3 + hydrogencarbonate = ADP + carbamoyl phosphate + H2O the protein residues involved in ligand binding, together with a model of the transition state, suggest that catalysis follows an in-line, predominantly dissociative, phosphotransfer reaction mechanism, and that closure of the flexible auxiliary domain is required to protect the transition state from bulk solvent. Model of the transition state, overview 739466 2.7.2.2 NH3 + hydrogencarbonate = carbamate + H2O (1b), spontaneous -