Researchers have shown that RNA molecules can grow peptides all by themselves—no ribosome required—which may have helped kick-start life on Earth.
. But to give rise to modern life, RNA would have had to somehow “learn” to make proteins, and eventually ribosomes. “At the moment, the ribosome simply falls from the heavens,” says Thomas Carell, a chemist at Ludwig Maximilian University of Munich.
Carell and his colleagues noticed that some of these noncanonical RNAs could have been synthesized from simple molecules on early Earth. They and others went on to show that some noncanonical bases could bind to amino acids, the building blocks of proteins, raising the possibility they could also link them together into peptides.
Norge Siste Nytt, Norge Overskrifter
Similar News:Du kan også lese nyheter som ligner på denne som vi har samlet inn fra andre nyhetskilder.
Earth given 50-50 chance of hitting key warming mark by 2026In 2018, a major United Nations science report predicted dramatic and dangerous effects on people and the world if warming exceeds 1.5 degrees Celsius.
Les mer »
Cambrian explosion: the biological big bang in the history of the EarthThe Cambrian explosion was a period of unprecedented experimentation by life on Earth. Let's check out some of its strangest 'results.'
Les mer »
Earth given 50-50 chance of hitting key warming mark by 2026The world is creeping closer to the warming threshold, with nearly a 50-50 chance that Earth will temporarily hit that temperature mark within the next five years, teams of meteorologists across the globe predicted.
Les mer »
Earth given 50-50 chance of hitting key warming mark by 2026The world is creeping closer to the warming threshold international agreements are trying to prevent, with nearly a 50-50 chance that Earth will temporarily hit that temperature mark within the next five years, teams of meteorologists across the globe predicted.
Les mer »
Mining the moon to help save life on Earth (op-ed)Moving heavy industry off Earth could help cure some of what ails our planet.
Les mer »