净化和表征OTF-1,一个转录因子,调节细胞周期表达的人类素H2b基因的转录因子
C Fletcher1, N Heintz, R G Roeder
1Laboratory of Biochemistry and Molecular Biology, Rockefeller University, New York, New York 10021.
Cell
|December 4, 1987
概括
研究人员净化了八聚体结合转录因子1 (OTF-1),这对于人类素H2b基因转录至关重要. 这个因素是这个因素.
科学领域:
- 分子生物学分子生物学
- 基因法规 基因法规
- 生物化学 生物化学
背景情况:
- 基因转录 基因转录 基因转录 基因转录 基因转录 基因转录 基因转录 基因转录 基因转录 基因转录 基因转录 基因转录 基因转录 基因转录 基因转录 基因转录 基因转录 基因转录
- 八聚体结合转录因子在调节基因表达方面发挥着关键作用.
- 了解控制基因转录的特定因素对细胞循环研究至关重要.
研究的目的:
- 为了净化和表征八聚体结合转录因子 (OTF-1),该因子负责刺激人类素H2b基因转录.
- 为了在体外确认净化OTF-1的身份和功能活性.
- 为了研究OTF-1在细胞周期特异性的活性与基因表达的基因表达.
主要方法:
- 从HeLa核提取物中净化OTF-1,使用DNA亲和染色学.
- 通过SDS-聚烯胺凝电泳和活性再生,识别净化因子.
- 在复制的体外系统中对H2b基因转录刺激的测试.
主要成果:
- 成功净化了一种转录因子,称为OTF-1,该因子刺激人体黑色素H2b基因转录.
- 纯化的OTF-1在体外显示有效刺激H2b转录,依赖于八度元素.
- 在S相核提取物中检测到OTF-1活性,但未检测到G2相核提取物,这与体内数据一致.
结论:
- 该研究成功净化了真实的H2b转录调节因子OTF-1.
- OTF-1是人类基因表达基因表达的关键调节者,具有S相特异性活性.
- 这些发现为细胞周期调节的基因转录的分子机制提供了洞察力.
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