[Influence of amino acids on synthesis of extracellular proteases by Actinomyces thermovulgaris].

Various amino acids had different effect on the synthesis of exocellular proteases by Actinomyces thermovulgaris T-54. Glutamine and arginine induced the synthesis, the effect depending on their concentration in the medium. Other amino acids inhibited the synthesis of proteases. The synthesis of alkaline and neutral proteases was not coordinated, and the ratio between these enzymes was not constant in different variants of the experiment. The maximum synthesis of alkaline proteases was found before the formation of submerged spores.