name: ammonia assimilation cycle
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def: "The pathway by which ammonia is processed and incorporated into a cell. In an energy-rich (glucose-containing), nitrogen-poor environment, glutamine synthetase and glutamate synthase form an ammonia assimilatory cycle, in which ammonia is incorporated into L-glutamate to form L-glutamine, which then combines with alpha-ketoglutarate to regenerate L-glutamate. This ATP-dependent cycle is essential for nitrogen-limited growth and for steady-state growth with some sources of nitrogen." [MetaCyc:AMMASSIM-PWY]
synonym: "glutamate metabolic process via glutamine and ammonia" EXACT 
synonym: "glutamate metabolism via glutamine and ammonia" EXACT 
is_a: GO:0006536 ! glutamate metabolic process
is_a: GO:0006541 ! glutamine metabolic process
is_a: GO:0019740 ! nitrogen utilization
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