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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jbsc/006/06/0839-0845

    • Keywords

       

      Rhizobium meliloti ; methionine sulphoximine; glutamine synthetase; glutamate dehydrogenase.

    • Abstract

       

      A strain ofRhizobium meliloti has been shown to be capable of growth in the presence of methionine sulphoximine concentrations at least two orders of magnitude higher than that required for the complete inhibition of glutamine synthetase activity. Neither the specific growth rate, nor the nutritional requirements of the organism were affected by methionine sulphoximine in the medium.Rhizobium meliloti appeared to assimilate ammoniavia the glutamate dehydrogenase pathway during growth in the presence of methionine sulphoximine. This suggests thatRhizobium meliloti may have some regulatory mechanism controlling ammonia assimilation that is not present in other enterobacteria possessing similar enzymatic machinery

    • Author Affiliations

       

      S Prakash Rao1 2 Usha George1 V V Modi1

      1. Department of Microbiology, Faculty of Science, M.S. University of Baroda, Baroda - 390 002, India
      2. Department of Biology, McGill University, Montreal, Canada
    • Dates

       
  • Journal of Biosciences | News

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