裂变酵母 Schizosaccharomyces pombe 正确切除一个哺乳动物RNA转录中间序列的序列
Nature
|November 7, 1985
概括
裂变酵母,Schizosaccharomyces pombe,准确地从更高的真核生物基因中删除中间序列. 这一发现表明,与Saccharomyces cerevisiae相比,Schizosaccharomyces pombe是研究RNA拼接和表达真核生物基因的优越模型.
科学领域:
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
- 酵母生物学的酵母生物学
背景情况:
- 发芽的酵母 (Saccharomyces cerevisiae) 由于不高效地从更高的真核转录中去除中间序列,因此与异质基因表达斗争.
- 在S. cerevisiae中,这种低效率与用于拼接的中间序列的3'末端附近的TACTAAC盒子的严格要求有关.
- 裂变酵母 (Schizosaccharomyces pombe) 拥有与高级真核生物相似的保留序列的内子,这表明了改善拼接能力的潜力.
研究的目的:
- 研究schizosaccharomyces pombe能够准确地从更高的真核生物基因转录中切除中间序列的能力.
- 评估schizosaccharomyces pombe作为RNA拼接研究和异质基因表达的模型系统.
主要方法:
- 克隆猿人病毒40 (SV40) 小T抗原DNA.
- 在Schizosaccharomyces pombe细胞中克隆病毒DNA的表达.
- 对转录处理的分析,以评估中间序列删除和拼接位置的利用.
主要成果:
- Schizosaccharomyces pombe精确地利用了猿类病毒40 (SV40) 小T抗原转录的5'和3'拼接部位.
- 裂变酵母证明了从测试的高真核生物基因转录中有效切除中间序列.
结论:
- 斯基佐萨克罗米切斯庞贝 (Schizosaccharomyces pombe) 显示出高细胞转录的精确RNA拼接,与Saccharomyces cerevisiae不同.
- Schizosaccharomyces pombe为RNA拼接的遗传研究提供了一个更适合的模型生物.
- 这种酵母物种为表达更高的真核基因提供了一个有前途的系统.
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