منابع مشابه
The Lipid-RNA World
The simplest possible beginning of abiogenesis has been a riddle from the last century, which is most successfully solved by the Lipid World hypothesis. However, origin of the next stages of evolution starting form lipids is still in dark. We propose a ‘Lipid-RNA World Scenario’ based on the assumption that modern stable lipid-RNA interactions are molecular fossils of an ancient stage of evolut...
متن کاملBrave new RNA world.
In 1995, you could still find, in the opening paragraphs of manuscripts and grant applications from my lab and others, the phrase “In the absence of a crystal structure for the ribosome....,” by way of rationalizing any number of biochemical studies aimed at figuring out the three-dimensional locations of things inside the ribosome, and ultimately its mechanism. We no longer have this excuse. T...
متن کاملRNA World Hypothesis
The quest to reach a plausible hypothesis concerning the origin of life is ongoing. Today, we have conceptualized many workable hypotheses; however, a vigorous controversy has evolved over the past years concerning the nature of the origin of life. We’ll start first with theory of the “RNA world” that states that the first molecular systems to display the properties of self-replication and evol...
متن کاملConstructing an RNA world.
A popular theory of life's origins states that the first biocatalysts were not made of protein but were made of RNA or a very similar polymer. Experiments are beginning to confirm that the catalytic abilities of RNA are compatible with this 'RNA world' hypothesis. For example, RNA can synthesize short fragments of RNA in a template-directed fashion and promote formation of peptide, ester and gl...
متن کاملThe small RNA world.
Small RNAs have burst on the scene as ubiquitous, versatile repressors of gene expression in plants, animals and many fungi. These tiny RNAs (~21-26 nt), which induce silencing through homologous sequence interactions, come in many guises: short interfering (si) RNAs (Elbashir et al., 2001), small temporal (st) RNAs (Pasquinelli et al., 2000), heterochromatic siRNAs (Reinhart and Bartel, 2002),...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1987
ISSN: 0028-0836,1476-4687
DOI: 10.1038/328676b0