Involvement of a Primary Electrogenic Pump in the Mechanism for HCO3 Uptake by the Cyanobacterium Anabaena variabilis

Abstract
The response of the membrane potential to HCO3 supply has been studied in the cyanobacterium Anabaena variabilis strain M-3 under various conditions. Changes in potential were followed with the aid of the lipophilic cation tetraphenyl phosphonium bromide.