title: Nitrogenases without molybdenum.
abstract: For 50 years molybdenum had been considered to have an indispensable catalytic function for nitrogen fixation. Two nitrogenases recently isolated from the bacterium Azotobacter have changed this view. One is a vanadium-containing enzyme and the other lacks both molybdenum and vanadium. Similar nitrogenases may occur in other nitrogen-fixing organisms.
authors.forename: R N
authors.initials: RN
authors.lastname: Pau
mesh_terms: D000595:Amino Acid Sequence; D008969:Molecular Sequence Data; D015394:Molecular Structure; D008982:Molybdenum / Q000378:metabolism*; D009591:Nitrogenase / Q000378:metabolism*
chemical_list: D008982:Molybdenum; D009591:Nitrogenase