1.18.6.2	12 reduced ferredoxin + 12 H+ + N2 + 40 ATP + 40 H2O	-	
1.18.6.2	additional information	the efficiency of ATP hydrolysis coupled to substrate reduction (ATP/2e ratio) is 4.87 at 30°C during the reduction of protons to H2 and 7.16 during the reduction of N2