Abstract
1. 1. l-Aspartate transport activity was optimally induced following 6 h growth on acetate minimal media. 2. 2. The observed aspartate (and glutamate) transport activity was attributed to the general amino acid transport system since l-phenylalanine, but not l-cysteic acid, inhibited transport activity at all pH values tested. 3. 3. Changes in K m values for l-aspartate and l-glutamate transport following growth on acetate minimal media indicated that apparent “affinities” of the “acidic amino acid transport systems” dramatically increased during the stages of active growth.
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