Abstract
Glucose or non-metabolizable glucose analogues induce two systems of amino-acid transport in Chlorella vulgaris: an arginine-lysine system and a proline system. An additional third system of amino-acid transport is induced when glucose and an inorganic nitrogen source are present during glucose induction. The transport rates in glucose-NH +4 -treated cells are 10 to 80 times higher than in untreated cells. The transport system shows a rather broad specificity and catalyses the transport of at least ten neutral and acidic amino acids. Three of these amino acids (l-alanine, l-serine and glycine) are transported by the proline system as well. The system is specific for l-amino acids and has a pH optimum between 5 and 6. Transport by this system seems to be active, since amino acids are accumulated inside the cells.
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Sauer, N. A general amino-acid permease is inducible in Chlorella vulgaris . Planta 161, 425–431 (1984). https://doi.org/10.1007/BF00394573
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DOI: https://doi.org/10.1007/BF00394573