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Unraveling the origins of life: Scientists discover ‘cool’ sugar acid formation in space

March 14, 2024
in Science
Unraveling the origins of life: Scientists discover ‘cool’ sugar acid formation in space
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Unraveling the origins of life: Scientists discover ‘cool’ sugar acid formation in space

Formation of glyceric acid in interstellar ices. The preparation of glyceric acid (1) in low-temperature ices containing carbon dioxide and ethylene glycol (16) is accomplished through energetic processing by GCR proxies. This process involves carbon-carbon bond coupling via recombination of the hydroxycarbonyl radical (HOĊO, 11) with the 1,2-dihydroxyethyl radical (HOĊHCH2OH, 17). Glyceric acid (1) serves as a precursor for critical biomolecules including the proteinogenic amino acid serine (4), 2-methyl glyceric acid (7), and lactic acid (15). In contemporary biochemistry, glyceric acid further represents molecular building blocks of 2-phosphoglyceric acid (2) and 3-phosphoglyceric acid (3) via phosphorylation reactions, linking to the TCA cycle (top right) and Calvin cycle (bottom right), respectively. Credit: Science Advances (2024). DOI: 10.1126/sciadv.adl3236

A critical molecule for the metabolism of living organisms has been synthesized for the first time by University of Hawaiʻi at Mānoa researchers at low temperatures (10 K) on ice coated nanoparticles mimicking conditions in deep space, marking a “cool” step in advancing our understanding of the origins of life.

The research is published in the journal Science Advances.

The UH Mānoa Department of Chemistry team of Professor Ralf I. Kaiser, and postdoctoral fellows Jia Wang and Joshua H. Marks worked with computational chemist Professor Ryan C. Fortenberry from the University of Mississippi to explore how glyceric acid can form in cold, carbon dioxide-rich icy environments of outer space. Glyceric acid is the simplest sugar acid that helps with a process called glycolysis, which is like the engine that helps break down the food we eat into energy that our bodies can use.

Using experiments with interstellar model ices and proxies of energetic Galactic Cosmic Rays at the UH Mānoa’s W. M. Keck Research Laboratory in Astrochemistry, racemic glyceric acid was formed and detected with the help of photo ionization lasers in the gas phase. These molecules might play a role in the development of life on planets like Earth. Scientists now hope to detect these molecules in space using telescopes such as ALMA.

“The study suggests that molecules like glyceric acid could have been synthesized in molecular clouds and possibly in star forming regions prior to their delivery to Earth via comets or meteorites thus contributing to the building blocks of life,” Kaiser said. “Understanding how these molecules form in space is crucial for unraveling the mysteries of life’s origins.”

“The potential presence of such molecules in space shows how the chemistry in our bodies is connected to the chemistry of ‘the beyond,'” Fortenberry said. “Additionally, the interaction of experiment and computation also highlights how different perspectives on science work together to make the generation of new knowledge possible.”

More information:
Jia Wang et al, Interstellar formation of glyceric acid [HOCH 2 CH(OH)COOH]—The simplest sugar acid, Science Advances (2024). DOI: 10.1126/sciadv.adl3236

Citation:
Unraveling the origins of life: Scientists discover ‘cool’ sugar acid formation in space (2024, March 13)
retrieved 14 March 2024
from https://phys.org/news/2024-03-unraveling-life-scientists-cool-sugar.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

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