nitrogen compound metabolic process primary metabolic process organic substance metabolic process catabolic process cellular metabolic process nitrogen compound metabolic process primary metabolic process organic substance metabolic process catabolic process cellular metabolic process nitrogen compound metabolic process primary metabolic process organic substance metabolic process catabolic process cellular metabolic process nitrogen compound metabolic process primary metabolic process organic substance metabolic process catabolic process cellular metabolic process nitrogen compound metabolic process primary metabolic process organic substance metabolic process catabolic process cellular metabolic process nitrogen compound metabolic process primary metabolic process organic substance metabolic process catabolic process cellular metabolic process nitrogen compound metabolic process primary metabolic process organic substance metabolic process catabolic process cellular metabolic process nitrogen compound metabolic process primary metabolic process organic substance metabolic process catabolic process cellular metabolic process nitrogen compound metabolic process primary metabolic process organic substance metabolic process catabolic process cellular metabolic process nitrogen compound metabolic process primary metabolic process organic substance metabolic process catabolic process cellular metabolic process nitrogen compound metabolic nitrogen compound metabolic process primary metabolic processprimary metabolic process organic substance metabolic organic substance metabolic process catabolic processcatabolic process cellular metabolic processcellular metabolic process protein binding protein binding protein binding protein binding protein binding protein binding protein binding protein binding protein binding protein binding protein bindingprotein binding cell protein-containing complex cell protein-containing complex cell protein-containing complex cell protein-containing complex cell protein-containing complex cell protein-containing complex cell protein-containing complex cell protein-containing complex cell protein-containing complex cell protein-containing complex cellcell protein-containing complexprotein-containing complex