挫败的基因:真核生物基因表达的起源
1Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA 94158, USA.
Cell
|November 12, 2013
概括
细胞基因表达涉及 prokaryotes 缺少复杂的步骤,可能进化以对抗寄生虫核酸. 这些调节机制对于细胞功能和防御至关重要.
科学领域:
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
- 进化生物学 进化生物学
背景情况:
- 单核细胞的基因表达包括在原核生物中没有发现的复杂的调节步骤.
- 这些额外的步骤对于转录和翻译的基本过程来说并不严格要求.
研究的目的:
- 探索真核生物基因表达中的复杂调节机制背后的进化驱动因素.
- 调查假设,对寄生核酸的防御影响了这些步骤的进化.
主要方法:
- 对真核生物和原核生物的基因调节途径进行比较基因组学分析.
- 对真核细胞调节元件和外来核酸之间的潜在相互作用的生物信息分析.
- 遗传学重建,以追踪复杂基因表达机制的出现.
主要成果:
- 在真核生物中识别独特的调节元素和过程.
- 某些调节机制与与防御相关的基因存在的相关性.
- 证据表明基因调节复杂性和寄生核酸流行之间的共同进化关系.
结论:
- 细胞基因表达的复杂性质可能是作为对移动遗传元素和病毒的防御机制而产生的.
- 了解这些进化压力,可以了解基因组稳定性和细胞防御策略.
- 需要进一步的研究,以充分阐明基因调节和真核生物天生的免疫之间的相互作用.
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