Abstract
Ammonium at 5mM completely inhibited nitrogenase activity of Nostoc ANTH but only slightly inhibited the membrane potential, indicating that these two events are independent and that nitrogenase activity is not regulated by the latter.
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References
HaakerH., LaaneC. & VeegerC. 1980 Dinitrogen fixation and proton motive force. In Nitrogen Fixation, eds StewartW.D.P. & GallonJ.R. pp. 113–136. London: Academic Press.
HawkesfordM.J., ReedR.H., RowellP. & StewartW.D.P. 1982 Nitrogenase activity and membrane electrogenesis in the cyanobacterium Plectonema boryanum. European Journal of Biochemistry 127, 63–66.
Singh, S. & Bisen, P.S. 1994 Evidence for the assimilation of ethylenediamine as nitrogen source by the cyanobiont Nostoc ANTH. World Journal of Microbiology and Biotechnology 10, in press.
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B.B. Singh and P.S. Bisen are with the Department of Microbiology, Barkatullah University, Bhopal-462026, India; S. Singh was with the Department of Microbiology, Barkatullah University, Bhopal, India; he is now with the Department of Microbiology, North Maharastra University, Jalgaom-425001, India.
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Singh, S., Singh, B.B. & Bisen, P.S. Role of membrane potential in ammonium inhibition of nitrogenase activity in the cultured cyanobiont Nostoc ANTH. World J Microbiol Biotechnol 10, 600 (1994). https://doi.org/10.1007/BF00367679
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DOI: https://doi.org/10.1007/BF00367679