Concentrations and Compositions of Internal Free Amino Acids in a Halotolerant Brevibacterium sp. in Response to Salt Stress

Abstract

Internal amino acids of Brevibacterium sp. JCM6894 were analyzed when the cells were grown in various concentrations of NaCl. γ-Aminobutyric acid was accumulated in parallel with the increase of external NaCl concentrations. During transient salt stress, 4-hydroxyproline was synthesized in the cells.