Effects of Culture Environments on Alkaline Protease Biosynthesis in Streptomyces sp.

Streptomyces속 세균에서 호염기성 단백질 분해효소 생합성에 미치는 배양환경의 영향

  • 노용택 (서울대학교 자연과학대학 미생물학과) ;
  • 김종웅 (서울대학교 자연과학대학 미생물학과) ;
  • 이계준 (서울대학교 자연과학대학 미생물학과)
  • Published : 1990.06.01


The aims of the present study were to evaluate the effects of culture conditions on the biosynthesis of extra-cellular alkaline protease in Streptomyces sp. The formation of aerial mycelia and spores were compared with the protease production in order to know the relations between the alkaline protease and the cell differentiation. As results, it was found that substrate concentration was very critical to regulate the formation of the protease, aerial mycelia, and spores, which were resulted from the changes of culture pH to acid. When the culture pH was adjusted with phosphate buffer from pH 6 to pH 9, the alkaline protease production was increased as the culture pH increased whereas aerial mycelia and spore formation were reversely related to the culture pH. Therefore, it was thought that the culture pH was an important factor to regulate the alkaline protease synthesis.


Streptomyces sp;Alkaline protease;Sporulation;Cell differentiaiotn