RNA world - Wikipedia
网页The RNA world is a hypothetical stage in the evolutionary history of life on Earth in which self-replicating RNA molecules proliferated before the evolution of DNA and proteins. [1] The term also refers to the hypothesis that posits the existence of this stage.
RNA world学说 （RNA world hypothesis） - 知乎专栏
网页RNA world学说 （RNA world hypothesis）. 最初的生命是如何产生的呢？. 这是一个“先有鸡还是先有蛋”的终极难题（ chicken or the egg causality dilemma ）。. 生命系统正常运行离不开核糖体，其主要负责翻译蛋白质，但是核糖体自身的组成成分又包含蛋白质。. 所以，最初 …
The RNA World and the Origins of Life - Molecular Biology of …
网页We have seen in this chapter, for example, that a molecule of RNA is the catalyst for the peptidyl transferase reaction that takes place on the ribosome. The unique potential of RNA molecules to act both as information carrier and as catalyst forms the basis of the RNA world hypothesis.
the RNA world - 知乎 - 知乎专栏
网页the RNA world. 1986年，随着多种RNA核酶催化活性的发现，Walter Gilbert首次提出了“the RNA world”的假说 [1]。. 他设想了一个原始的、只含有RNA的世界：RNA分子催化自我复制，通过自我剪接产生具有功能活性的RNA分子，通过内含子形成的转座元件不断重排以适应 …
The RNA world ‘hypothesis’ - Nature Reviews Molecular Cell Biology
网页2022年7月6日 · The RNA world hypothesis — which postulates that RNA with both genetic information and catalytic activity had an essential role in the origin of life — is now supported by many scientists.
The RNA World: molecular cooperation at the origins of life
网页2014年11月11日 · The RNA World concept is the idea that billions of years ago — before current life based on DNA, RNA and proteins — the primary living substance was RNA or something chemically similar.
RNA世界学说 - 维基百科，自由的百科全书
网页2024年7月17日 · RNA世界学说 （英语： RNA world hypothesis）理论认为， 地球 上早期的 生命 分子以 RNA 先出现 [1]，之后才有蛋白质和 DNA [2][3]；这些早期的RNA分子同时拥有类似现在DNA具有的遗传讯息储存功能，以及类似现在 蛋白质 具有的 催化 能力 [4] 支持早期细胞或前细胞生命的 ...
RNA世界假说 - 百度百科
网页RNA世界假说，英文为RNA World hypothesis，是科学家依据多年的科学研究而提出的一条关于 生命科学 的理论。. 其内容为：生命进化的早期，没有 蛋白质 （酶），某些RNA可以催化 RNA 的复制——也就是说RNA是唯一的遗传物质，是生命的源头。. 中文名. RNA世界假说 ...
The RNA world - Understanding Evolution
网页The RNA world. Biologists used to view RNA as a lowly messenger — the molecule that carries information from DNA to the protein-building centers of the cell. But discoveries since the early 1980s have shown that RNA can do much more. In addition to carrying genetic information, RNA can fold up into a complex structure that catalyzes a ...
How did life begin? One key ingredient is coming into view - Nature
网页2023年2月28日 · Its birth — the details of which remain hypothetical — would have created a fundamental shift in this prebiotic, RNA-dominated world, providing a key ingredient to all life as we know it.