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酵母에 있어서 meliabiase의 誘導生成

Induction of Melibiase in Yeast

한국식물학회지 1964년 7권 3호 p.1 ~ 8
박상신,
소속 상세정보
박상신 ( Park Sang-Shin ) - Seoul National University Deptarment of Botany

Abstract


PARK, Sang Shin (Dept. of Botany, Seoul National University) Induction of Melibiase in Yeast. Kor. Jour. Bot. Ⅶ (3):1-8, 1964.
Exposing yeast cells with a certain genotype to different inducers, the ability of the yeast cells (Saccharomyces cerevisiae) to obtain enhanced fermentation for carbohydrates was observed Regardless of the preexposure to any substrate, the inherent character incapable of fermenting a certain carbohydrae was maintained, while utilization of carbohydrates by the cells with a certain geae markers was varied by the previous conditions where they were exposed. Galactose was the best inducer for the cells to elaborate melibiase, even the galactose was not utilized as a substrate. Preexposure to galactose seemed to be necessary for the cells to utilize galactose and melibiose. Galactose fermentation by GA cells was enhanced by the exposure of the cells to galactose, but not to melibiose, raffinose, sucrose or glucose. Delayed fermentation of sucrose by the cells exposed to glucose or melibiose, but not to galactose, was observed. Raffinose fermentation was obtained by the cells with either SU RAF or GA ME genes, but the enhanced fermentation of raffinose seemed to be dependent on which inducer the cells were exposed previously and enzymes indured by the inducer to break either one of the linkages of raffinose molecule, the alpha-galastosidic or the beta-fructo-furanosidic.

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