Ks value of a specific permease for each aromatic amino acid

Value 1E-07 unitless
Organism Bacteria Salmonella typhimurium
Reference Shehata TE, Marr AG. Effect of nutrient concentration on the growth of Escherichia coli. J Bacteriol. 1971 Jul107(1):210-6. p.215 left column top paragraphPubMed ID4935320
Primary Source Ames GF. Uptake of amino acids by Salmonella typhimurium. Arch Biochem Biophys. 1964 Jan104 :1-18.PubMed ID14110716
Comments "[Primary source] reported two different Ks values (depending on the concentration of the amino acids in the medium) corresponding to two systems for amino acid uptake: a specific permease for each aromatic amino acid with high affinity (10^-7 M) and a nonspecific permease with low affinity (10^-5 M)." Ks is the "half-velocity constant"—the value of S when µ/µmax = 0.5, S is the concentration of the limiting substrate for growth
Entered by Uri M
ID 109478