منابع مشابه
Gene dosage effects on the synthesis of maltase in yeast.
Inbred strains of Saccharomyces cerevisiae carrying MAL1, MAL2, or MAL6 in a common background were used to construct (i) homo- or heterozygous diploids carrying one or two active alleles of a single MAL locus (MAL1, MAL2, or MAL6) and (ii) triploids carrying one, two, or three active alleles of MAL2. The diploid and triploid strains were used to investigate gene dosage effects of the different...
متن کاملThe effects of three different mal loci on the regulation of maltase synthesis in yeast.
Inbred haploid strains of Saccharomyces cerevisiae carrying MAL1, MAL2 or MAL6 in a common background have been crossed to each other and to strains carrying no active MAL loci. The kinetics of maltase induction and the induced maltase levels have been examined in the inbred strains and in haploid segregants of the crosses. Differences have been found in the kinetics of induction and induced ma...
متن کاملOn the role of the inducer in the synthesis of maltase in yeast.
One aspect of the process of the induced synthesis of enzymes which is relatively amenable to experimental analysis is the role of the inducer. It has been established in a variety of cases that utilizability is not a necessary attribute of effective inducers. Thus, Spiegelman et al. (1947) demonstrated that maltose can induce maltase at pH values that preclude metabolism of the maltose by full...
متن کاملExtracellular Maltase of Bacillus brevis.
Bacillus brevis NRRL B-4389 produced extracellular maltase (alpha-glucosidase; EC 3.2.1.20) only in the presence of short alpha-1,4-glucosidic polymers, such as maltose and maltotriose. An optimum medium was developed; it contained 2.5% maltose, 0.5% nonfat dry milk, 0.4% yeast extract, and 0.01% CaCl(2). The enzyme was produced extracellularly during the logarithmic phase of growth; no cell-bo...
متن کاملAcid maltase deficiency--Pompe's disease.
Mutation in genes encoding for proteins involved in glycogen synthesis, degradation or regulation results in various inborn errors of glycogen metabolism. The disorders that result in abnormal storage of glycogen are known as glycogen storage diseases (GSD). We report a rare and interesting case of a young boy who presented with generalized weakness and reduced muscle bulk since childhood. He w...
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ژورنال
عنوان ژورنال: Journal of the Institute of Brewing
سال: 1926
ISSN: 0046-9750
DOI: 10.1002/j.2050-0416.1926.tb05038.x