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 cell protein-containing complex organelle membrane-enclosed lumen cell protein-containing complex organelle membrane-enclosed lumen cell protein-containing complex organelle membrane-enclosed lumen cell protein-containing complex organelle membrane-enclosed lumen cell protein-containing complex organelle membrane-enclosed lumen cell protein-containing complex organelle membrane-enclosed lumen cell protein-containing complex organelle membrane-enclosed lumen cell protein-containing complex organelle membrane-enclosed lumen cell protein-containing complex organelle membrane-enclosed lumen cell protein-containing complex organelle membrane-enclosed lumen cellcell protein-containing complexprotein-containing complex organelleorganelle membrane-enclosed lumenmembrane-enclosed lumen