A carbon atom bound with a triple unsaturated bond to a nitrogen atom is called a nitrile. ribonucleotides are composed of the "letters" A, U, C, and G and are essential for life. A group of researchers from Spain, Japan, Italy, and the US have shown that a wide range of nitriles can be found in the center of the Milky Way.
The author of the new study is a researcher at the Center for Astrobiology of the Spanish National Research Council.
There is a possibility of aRNA-only world.
According to this scenario, life on Earth was based on only one substance, theRNA. Both storing and copying information and catalyzing reactions can be done with the help ofRNA. According to the "RNA World" theory, nitriles and other building blocks for life may have originated inside meteorites and comets during the "late heavy" time period. In comets and meteorites, there are conjugates of nitriles and other conjugates.
Is it possible that the molecule came from where in space? The dense and cold regions of the interstellar medium make up the prime candidates. The cloud G+0.693-0.027 has a temperature of 100 K and a mass of one thousand times that of the sun. There is no evidence that stars are currently forming inside G+0.693-0.027, but scientists think it might become a stellar nursery in the future.
The chemical composition of G+0.693-0.027 is similar to other star-forming regions in our galaxy and also to comets. Rivilla said that the study could give important insights about the chemical ingredients that were available in the nebula that gave rise to our planetary system.
There is a study of the electric spectrum.
Rivilla and colleagues used two telescopes in Spain to study the spectrum. They found three nitriles that hadn't yet been found in G+ 0.693-0.027.
There is evidence for the occurrence in G+0.693-0.027 of HCOCN and HOCH 2 CN. It was the first time that cyanoformaldehyde was found in the clouds in the constellation Sagittarius.
Other recent studies have also reported other RNA precursors inside G+0.693-0.027, such as glycolaldehyde (HCOCH 2 OH), urea (NH 2 CONH 2 ), hydroxylamine (NH 2 OH), and 1,2-ethenediol.
Chemical families in space.
Thanks to our observations over the past few years, we now know that nitriles are among the most abundant chemical families. They have been found in clouds in the center of our universe, as well as in meteorites and comets, and in the atmosphere of the largest moon in the solar system.
Izaskun Jiménez-Serra is a researcher at CSIC and INTA. Key missing molecule are difficult to detect. The formation of the first cells probably depended on other molecules such as lipids, which is why we know about the origin of life on Earth. We need to understand how lipids could be formed from simpler precursors.
More information: Molecular precursors of the RNA-world in space: new nitriles in the G+0.693-0.027 molecular cloud, Frontiers in Astronomy and Space Sciences (2022). DOI: 10.3389/fspas.2022.876870, www.frontiersin.org/articles/1 … pas.2022.876870/full
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