Yamashita I, Takano Y, Fukui S
J Bacteriol. 1985 Nov;164(2):769-73. doi: 10.1128/jb.164.2.769-773.1985.
Extracellular production of glucoamylase from the yeast Saccharomyces diastaticus carrying an STA1 gene (a structural gene for the enzyme) is repressed by the mating-type constitution a/alpha. We obtained mutants that were relieved from the mating-type control of the STA1 gene expression. Tetrad analysis showed that the mutation was closely linked to MATa. The mutation was complemented by a MATa2 gene; hence, it was designated mata2. Northern blot analysis revealed that the MATa2-mediated repression occurs at the posttranscriptional level.
携带STA1基因(该酶的结构基因)的糖化酵母胞外产生的葡糖淀粉酶受交配型组成a/α的抑制。我们获得了从STA1基因表达的交配型控制中解脱出来的突变体。四分体分析表明该突变与MATa紧密连锁。该突变由MATa2基因互补;因此,它被命名为mata2。Northern印迹分析显示MATa2介导的抑制发生在转录后水平。