NR

+ NAD(P)H + H⁺ = + NAD(P) + H₂O

NiR

+6Fd(red) +8 H⁺ = NH₄⁺+6Fd(ox) = 2H₂O

GS1/GS2

glutamate + + ATP = glutamine + ADP + Pi

Fd-GOGAT

glutamine + 2-oxoglutarate + 2 Fd (red) = 2 glutamate + 2 Fd (ox)

NADH-GOGAT

glutamine + 2-oxoglutarate + NADH = 2 glutamate + NAD

GDH

glutamate + H₂O + NAD/NADP = + 2-oxoglutarate + NADH/NADPH

AspAT

glutamate + oxaloacetate = aspartate + 2-oxoglutarate

AS

glutamine + aspartate + ATP = asparagine + glutamate + AMP +PPi