Regulation of hydrogen utilisation in Rhizobium japonicum by cyclic AMP.

  title={Regulation of hydrogen utilisation in Rhizobium japonicum by cyclic AMP.},
  author={Soo Thye Lim and Keelnatham T Shanmugam},
  journal={Biochimica et biophysica acta},
  volume={584 3},
Utilisation (uptake) of hydrogen gas by whole cells of Rhizobium japonicum was found to be influenced by the carbon source(s) present in the growth medium, with activity being highest in a medium containing sugars. Tricarboxylic acid cycle intermediates, such as malate, significantly reduced H2 utilisation. No reduction in the hydrogenase activity is observed when the enzyme is assayed directly by the tritium exchange method, indicating that the decrease in hydrogen uptake activity is not due… CONTINUE READING
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