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Uptake of amino acids by the cyanobacterium Anabaena ATCC 27893
Author(s) -
PING XU,
MCAULEY P. J.
Publication year - 1990
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1990.tb00488.x
Subject(s) - phenylalanine , amino acid , anabaena , biochemistry , arginine , lysine , algae , chemistry , biology , cyanobacteria , bacteria , botany , genetics
summary Active uptake of phenylalanine has been characterized in a species of cyanobacterium, Anabaena sp. ATCC 27893. Phenylalanine was apparently taken up by only one transport system over the concentration range 2–50 μM. Inhibition of phenylalanine uptake by glutamate and a range of neutral amino acids suggested that these were internalized by the same system. At least one other system appeared to be present, transporting the basic amino acids arginine and lysine. The K m and V max of phenylalanine uptake were comparable to those of phenylalanine uptake in eukaryotic unicellular freshwater algae. Uptake was energy dependent and internalized phenylalanine was rapidly incorporated into trichloracetic acid‐insoluble material.