nifgene expression (四)固氮反 应的调控 7⊙1 N2+8e-+10Ht Nitrogenase > 2NH H2 16 ATP 16P+16ADP NH2 NAD+ Nicotinamide Active Nitrogenase Nitrogenase reductase Inactive Arg1o ADP- Ribose H,O Arg1or ADP ADP-ribosyl group(四) 固氮反 应的调控