title: Possible evolutionary relationships of the nitrogenase proteins.
abstract: Comparisons of the amino acid compositions of the nitrogenase proteins from different organisms and their correlation with cross-reactivities and taxonomical data suggest an evolution within bacterial genomes rather than within plasmids. Comparisons of the amino acid compositions of nitrogenases and other ATP-ases show similarities which might be due to the evolution of these ATP-ases from a common ancestral protein.
mesh_terms: D000251:Adenosine Triphosphatases; D000596:Amino Acids / Q000032:analysis; D001419:Bacteria / Q000201:enzymology; D005075:Biological Evolution; D005796:Genes; D009591:Nitrogenase; D010957:Plasmids; D013045:Species Specificity
chemical_list: D000596:Amino Acids; D009591:Nitrogenase; D000251:Adenosine Triphosphatases