Glutamine synthetase (GS) (EC 6.3.1.2) is an enzyme that plays an essential role in the metabolism of nitrogen by catalyzing the condensation of glutamate and ammonia to form glutamine: Glutamate + ATP + NH3 → Glutamine + ADP + phosphate. Glutamine Synthetase uses ammonia ...
Glucose-6-phosphate dehydrogenase (G6PD or G6PDH) (EC 1.1.1.49) is an cytosolic enzyme that catalyzes the chemical reaction: D-glucose 6-phosphate + NADP+↔ 6-phospho-D-glucono-1, 5-lactone + NADPH + H+. This enzyme is in the pentose phosphate pathway (see image), a metabolic ...