RNA World
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From Wikipedia, the free encyclopedia RNA with its nitrogenous bases to the left and DNA to the right. The RNA world hypothesis proposes that a world filled with life based on ribonucleic acid (RNA) predates the current world of life based on deoxyribonucleic acid (DNA) and protein . RNA, which can both store information like DNA and act as an enzyme like proteins, may have supported cellular or pre-cellular life. Some hypotheses as to the origin of life present RNA-based catalysis and information storage as the first step in the evolution of cellular life. The RNA world is proposed to have evolved into the DNA and protein world of today.
RNA World
Chemical Bonding Center: RNA World
The "RNA world" hypothesis claims that ancient organisms used RNA to carry out basic biological functions and only later evolved to use DNA and proteins (1) .
Artificial life and the RNA world
by Matthew Cobb Two things come together from earlier this year. First, there was a lot of argument here , in the Times Literary Supplement and elsewhere over Stephen C.
RNA World/Project description/en – Rechenkraft
RNA World project description RNA World is a distributed supercomputer that uses Internet-connected computers to advance RNA research. This system is dedicated to identify, analyze, structurally predict and design RNA molecules on the basis of established bioinformatics software in a high-performance, high-throughput fashion.
Riboswitches and the RNA World
+ Author Affiliations Riboswitches are structured noncoding RNA domains that selectively bind metabolites and control gene expression (Mandal and Breaker 2004a; Coppins et al. 2007; Roth and Breaker 2009).
+ Author Affiliations The crystal structures of ribosomes that have been obtained since 2000 have transformed our understanding of protein synthesis. In addition to proving that RNA is responsible for catalyzing peptide bond formation, these structures have provided important insights into the mechanistic details of how the ribosome functions.
The Roles of RNA in the Synthesis of Protein
No community-accepted scientific methods are available today to guide studies on what role RNA played in the origin and early evolution of life on Earth.
Setting the Stage: The History, Chemistry, and Geobiology behind RNA
Bacterial Small RNA Regulators: Versatile Roles and Rapidly Evolving Variations
+ Author Affiliations Small RNA regulators (sRNAs) have been identified in a wide range of bacteria and found to play critical regulatory roles in many processes.+ Author Affiliations
RNA Granules in Germ Cells
Evolution of Protein Synthesis from an RNA World
+ Author AffiliationsAptamers and the RNA World, Past and Present
+ Author Affiliations Aptamers and the SELEX process were discovered over two decades ago.The CRISPR/Cas system in prokaryotes provides resistance against invading viruses and plasmids. Three distinct stages in the mechanism can be recognized. Initially, fragments of invader DNA are integrated as new spacers into the repetitive CRISPR locus.