Physical organization of the Bradyrhizobium japonicum nitrogenase gene region.

  title={Physical organization of the Bradyrhizobium japonicum nitrogenase gene region.},
  author={Thomas H. Adams and C. Robertson McClung and Barry K. Chelm},
  journal={Journal of bacteriology},
  volume={159 3},
In Bradyrhizobium japonicum USDA 110 the three genes that encode the nitrogenase enzyme complex are separated into two transcription units, nifH and nifDK. We have physically mapped a 33-kilobase-pair region of the B. japonicum genome that contains both nifH and nifDK. The nifDK operon is located transcriptionally upstream from nifH, and all three genes are transcribed in the same direction. Within the 20-kilobase-pair region that separates the promoters for these two transcription units, we… CONTINUE READING

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