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