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In autotrophically grown Chlorella cells, glucose induces a hexose transport system but, at the same time, the synthesis of two amino acid transport systems is also induced. Thus, the rates of uptake of glycine, L-alanine, L-proline, and L-serine, all of which compete with each other for entry into the cells, increase more than 100-fold when the algae are pretreated with glucose. The rates of L-arginine and L-lysine uptake increase by a factor of 25 to 50. The accumulation of proline and arginine within the cells amounts to 200- and 600-fold, respectively. Glucose does not cause the positive effect on amino acid uptake by serving as metabolic substrate because the nonmetabolizable 6-deoxyglucose also acts as inducer. Cycloheximide prevents the induction. The induced transport system for the four neutral amino acids has a turnover with a half-life of 7 hr, which corresponds closely to the half-life of the hexose transport system. The transport system for the basic amino acids, on the other hand, disappears with a half-life of 25 hr.
B H Cho, and
N Sauer, and
E Komor, and
W Tanner
November 1983,
Planta,
B H Cho, and
N Sauer, and
E Komor, and
W Tanner
January 1969,
Biochimica et biophysica acta,
B H Cho, and
N Sauer, and
E Komor, and
W Tanner
January 1993,
The Italian journal of gastroenterology,
B H Cho, and
N Sauer, and
E Komor, and
W Tanner
January 2003,
FEMS microbiology letters,
B H Cho, and
N Sauer, and
E Komor, and
W Tanner
November 1985,
Plant physiology,
B H Cho, and
N Sauer, and
E Komor, and
W Tanner
October 2008,
Plant physiology and biochemistry : PPB,
B H Cho, and
N Sauer, and
E Komor, and
W Tanner
August 1991,
The American journal of physiology,
B H Cho, and
N Sauer, and
E Komor, and
W Tanner
March 1997,
The Proceedings of the Nutrition Society,
B H Cho, and
N Sauer, and
E Komor, and
W Tanner
April 1993,
Journal of bacteriology,
