Nitrogenase reductase: A functional multigene family in Rhizobium phaseoli.

  title={Nitrogenase reductase: A functional multigene family in Rhizobium phaseoli.},
  author={Carmen Quinto and Humberto de la Vega and Margarita Flores and J. Leemans and Miguel A Cevallos and Michael S. Pardo and R Azpiroz and M de Lourdes Girard and E. Barrera Calva and Rafael Palacios},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={82 4},
The complete coding sequence of the nitrogenase reductase gene (nifH) is present in three different regions of a Rhizobium phaseoli symbiotic plasmid. Homology between two of the regions containing nifH coding sequences extends over 5 kilobases. These in turn share 1.3 kilobases of homology with the third region. The nucleotide sequences of the three nitrogenase reductase genes were found to be identical. Site-directed insertion mutagenesis indicated that none of the three genes is… CONTINUE READING


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