Characteristics and energy requirements of an alpha-aminoisobutyric acid transport system in Streptococcus lactis.

@article{Thompson1976CharacteristicsAE,
  title={Characteristics and energy requirements of an alpha-aminoisobutyric acid transport system in Streptococcus lactis.},
  author={Joseph V. Thompson},
  journal={Journal of bacteriology},
  year={1976},
  volume={127 2},
  pages={
          719-30
        }
}
Galactose-grown cells of Streptococcus lactis ML3 acculated alpha-aminoisobutyric acid (AIB) by using energy derived from glycolysis and arginine catabolism. The transport system displayed low-affinity Michaelis-Menten saturation kinetics. Using galactose or arginine as energy sources, similar V max and K m values for AIB entry were obtained, but on prolonged incubation the intracellular steady-state concentration of AIB in cells metabolizing arginine was only 65 to 70% that attained by… CONTINUE READING

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