• In enzymology, an ammonia kinase (EC 2.7.3.8) is an enzyme that catalyzes the chemical reaction ATP + NH3 ⇌ {\displaystyle \rightleftharpoons } ADP + phosphoramide Thus, the two substrates of this enzyme are ATP and NH3, whereas its two products are ADP and phosphoramide. (wikipedia.org)
  • This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing groups (phosphotransferases) with a nitrogenous group as acceptor. (wikipedia.org)
  • The systematic name of this enzyme class is ATP:ammonia phosphotransferase. (wikipedia.org)
  • Mechanism-based inhibition of enzyme I of the Escherichia coli phosphotransferase system. (ox.ac.uk)
  • Four phosphoenolpyruvate (PEP) derivatives, carrying reactive or activable chemical functions in each of the three chemical regions of PEP, were assayed as alternative substrates of enzyme I (EI) of the Escherichia coli PEP:glucose phosphotransferase system. (ox.ac.uk)
  • The low catalytic efficiency of these substrates permits the study of activity at in vivo EI concentrations. (ox.ac.uk)