nitrogen compound metabolic process cellular metabolic process primary metabolic process organic substance metabolic process nitrogen compound metabolic process cellular metabolic process primary metabolic process organic substance metabolic process nitrogen compound metabolic process cellular metabolic process primary metabolic process organic substance metabolic process nitrogen compound metabolic process cellular metabolic process primary metabolic process organic substance metabolic process nitrogen compound metabolic process cellular metabolic process primary metabolic process organic substance metabolic process nitrogen compound metabolic process cellular metabolic process primary metabolic process organic substance metabolic process nitrogen compound metabolic process cellular metabolic process primary metabolic process organic substance metabolic process nitrogen compound metabolic process cellular metabolic process primary metabolic process organic substance metabolic process nitrogen compound metabolic process cellular metabolic process primary metabolic process organic substance metabolic process nitrogen compound metabolic process cellular metabolic process primary metabolic process organic substance metabolic process nitrogen compound metabolic processnitrogen compound metabolic process cellular metabolic processcellular metabolic process primary metabolic processprimary metabolic process organic substance metabolic processorganic substance metabolic process catalytic activity, acting on a protein transferase activity catalytic activity, acting on a protein transferase activity catalytic activity, acting on a protein transferase activity catalytic activity, acting on a protein transferase activity catalytic activity, acting on a protein transferase activity catalytic activity, acting on a protein transferase activity catalytic activity, acting on a protein transferase activity catalytic activity, acting on a protein transferase activity catalytic activity, acting on a protein transferase activity catalytic activity, acting on a protein transferase activity catalytic activity, acting on a proteincatalytic activity, acting on a protein transferase activitytransferase activity cell membrane cell membrane cell membrane cell membrane cell membrane cell membrane cell membrane cell membrane cell membrane cell membrane cellcell membranemembrane