Sprague G F, Cronan J E
J Bacteriol. 1977 Mar;129(3):1335-42. doi: 10.1128/jb.129.3.1335-1342.1977.
Mutants of the yeast Saccharomyces cerevisiae that are defective in the catabolism of glycerol were isolated, and two types of mutants were obtained. One type was deficient in glycerol kinase activity, whereas the other type was deficient in sn-glycerol 3-phosphate dehydrogenase activity. Genetic analysis indicated that each mutant strain owed its phenotype to a single nuclear mutation, and that the two mutations were complementary. The mutations were not linked to each other or to any of 10 loci tested. In addition, neither mutation was centromere linked. Possible mechanisms for the regulation of these enzymes were tested by growing the parental strain in the presence of various carbon sources.
分离出了在甘油分解代谢方面存在缺陷的酿酒酵母突变体,并获得了两种类型的突变体。一种类型缺乏甘油激酶活性,而另一种类型缺乏sn-甘油3-磷酸脱氢酶活性。遗传分析表明,每个突变菌株的表型都归因于单个核突变,并且这两个突变是互补的。这些突变彼此之间不连锁,也不与所测试的10个基因座中的任何一个连锁。此外,这两个突变都不与着丝粒连锁。通过在各种碳源存在的情况下培养亲本菌株,测试了这些酶的可能调控机制。