title: Molecular biology of nitrogen fixation in the clostridia.
authors.forename: J S
authors.initials: JS
authors.lastname: Chen
authors.forename: J L
authors.initials: JL
authors.lastname: Johnson
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D003013:Clostridium / Q000201:enzymology / Q000235:genetics / Q000378:metabolism*; D004269:DNA, Bacterial; D008969:Molecular Sequence Data; D009586:Nitrogen Fixation / Q000235:genetics*
chemical_list: D004269:DNA, Bacterial