title: Molecular biology of nitrogen fixation.
mesh_terms: D000641:Ammonia / Q000378:metabolism; D002874:Chromosome Mapping; D003227:Conjugation, Genetic; D004926:Escherichia coli / Q000378:metabolism*; D005111:Extrachromosomal Inheritance; D005796:Genes; D005809:Genes, Regulator; D008040:Genetic Linkage; D005974:Glutamate-Ammonia Ligase / Q000096:biosynthesis; D006639:Histidine / Q000378:metabolism; D007711:Klebsiella pneumoniae / Q000378:metabolism*; D008954:Models, Biological; D009586:Nitrogen Fixation; D009591:Nitrogenase / Q000096:biosynthesis*; D009876:Operon; D014158:Transcription, Genetic; D014170:Transformation, Genetic
chemical_list: D006639:Histidine; D000641:Ammonia; D009591:Nitrogenase; D005974:Glutamate-Ammonia Ligase