耐塩性乳酸菌Tetracoccus soyaeのアミノ酸代謝について : (I) Threonineの酸化的代謝

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Tetracoccus soyae is a halo-tolerant, gram-positive and tetrad-forming coccus which is considered to be a lactic acid bacterium. When grown under aerobic conditions, the oxidative ability of its cells is strengthened. There is little information available on the amino acid metabolism of this organism. The present investigation was undertaken in order to study aerobic degradation of amino acid, especially threonine by this prganism. The following results were obtained.1. Proteolytic activity of Tc. soyae is extremely weak.2. Tc. soyae can utilize 9 amino acids aerobically but it can utilize only one amino acid anaerobically. The most available amino acid is L-serine, L-threonine and glycine aerobically.3. The oxidative metabolic activity of threonine by Tc. soyae is adaptable and its activity is specific to L-threonine.4. The main oxidative metabolic pathway of threonine is suggested to be the pathway through glycine.
公益社団法人日本生物工学会の論文
1968-11-25