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'Ion Transport' in keywords Facet   Publication Year 1979  [X]
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1979[X]
1Author    G. Kliinger, E. BrodaRequires cookie*
 Title    Der Einfluß zweiwertiger Fremdkationen auf die Aufnahme von Zink durch Chlorella Influence o f Twovalent Foreign Cations on the Uptake of Zinc by Chlorella  
 Abstract    The influence o f 10-4 divalent cations on the uptake o f labelled Zn in the concentration range 10~5 to 5 x 10-5 M into the interior o f Chlorella fusca at 30 °C was measured during 75 min. The Zn adsorbed on the surface or contained in the free space was rem oved by washing with EDTA. Corrections were applied for the loss in concentration due to surface adsorption, etc. The results were consistent with com petitive inhibition o f Zn uptake by the foreign ions. N o allosteric inh ib i­ tion was found. From the Lineweaver-Burk diagram, for uninhibited Zn, Ä^M was found as 7 x 1 0 "® M and vmax as 8.3 x lO -9 mol • m in_1-g -1 algae. The inhibitor constants were: Mg 1.3 xlO -5, Ca 4.3 x 10~5, Co 4.3 x 10-5, N i 4.3 x 10~5, Cd 1.3 x 10~5 and Pb 9.4 x 10~7 m. The values given for K m and the inhibitor constant refer to the velocities o f uptake after 45 min. 
  Reference    Z. Naturforsch. 34c, 751—756 (1979); eingegangen am 15. Juni 1979 
  Published    1979 
  Keywords    Chlorella, Green A lgae, Zn M etabolism, Ion Transport, Ion Com petition 
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 TEI-XML for    default:Reihe_C/34/ZNC-1979-34c-0751.pdf 
 Identifier    ZNC-1979-34c-0751 
 Volume    34