• In enzymology, a 4-methyleneglutamate-ammonia ligase (EC 6.3.1.7) is an enzyme that catalyzes the chemical reaction ATP + 4-methylene-L-glutamate + NH3 ⇌ {\displaystyle \rightleftharpoons } AMP + diphosphate + 4-methylene-L-glutamine The 3 substrates of this enzyme are ATP, 4-methylene-L-glutamate, and NH3, whereas its 3 products are AMP, diphosphate, and 4-methylene-L-glutamine. (wikipedia.org)