Abstract:An evaluation of the efficiency of the L-alanine and L-malate transport systems was undertaken with the photosynthetic bacterium Rhodospirillum rubrum grown on the amino acid whose uptake was measured. An all-glass apparatus was constructed for measuring transport activity under anaerobic conditions. L-Alanine transport activity decreased under conditions of Mg2e depletion. When cells were allowed to become inactive by suspending them in the dark in Mg2free buffer, full activity could be restored within a few … Show more
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