合成遗传聚合物能够产生遗传和进化
Vitor B Pinheiro1, Alexander I Taylor, Christopher Cozens
1Medical Research Council Laboratory of Molecular Biology, Hills Road, Cambridge CB2 0QH, UK.
概括
科学家们创造了六种新的遗传聚合物,称为外核酸 (XNA),可以存储和检索遗传信息. 这些XNA表明,遗传和进化不是DNA和RNA的独特特征,而是信息存储聚合物的基本特性.
科学领域:
- 生物化学 生物化学
- 合成生物学 合成生物学
- 分子进化分子进化
背景情况:
- DNA和RNA是唯一已知的用于遗传信息存储和处理的聚合物.
- 目前尚不清楚这是由于进化史或基本约束而造成的.
研究的目的:
- 研究遗传信息是否可以通过DNA和RNA以外的替代聚合物来存储和处理.
- 探索在合成遗传系统中达尔文进化的潜力.
主要方法:
- 利用聚合酶进化和设计来创建和测试新型遗传聚合物.
- 合成了六种不同的外核酸 (XNA),具有独特的核酸结构.
- 选择XNA体来评估它们的结合亲和性和特异性.
主要成果:
- 通过使用六种不同的XNAs成功存储和恢复遗传信息.
- 证明特定的XNA可以折叠成定义的结构.
- 选择的XNA体表现出高亲和度和特定标结合,表明进化能力.
结论:
- 遗传和进化并不仅限于DNA和RNA.
- 这些生命的标志似乎是聚合物能够存储信息的新兴特性.
- 异核酸代表了一种新的分子类别,在合成生物学及其他领域有着各种应用的潜力.
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