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  1. Pubblicazioni

Tracing the Primordial Chemical Life of Glycine: A Review from Quantum Chemical Simulations

Articolo
Data di Pubblicazione:
2022
Abstract:
Glycine (Gly), NH2CH2COOH, is the simplest amino acid. Although it has not been directly detected in the interstellar gas-phase medium, it has been identified in comets and meteorites, and its synthesis in these environments has been simulated in terrestrial laboratory experiments. Likewise, condensation of Gly to form peptides in scenarios resembling those present in a primordial Earth has been demonstrated experimentally. Thus, Gly is a paradigmatic system for biomolecular building blocks to investigate how they can be synthesized in astrophysical environments, transported and delivered by fragments of asteroids (meteorites, once they land on Earth) and comets (interplanetary dust particles that land on Earth) to the primitive Earth, and there react to form biopolymers as a step towards the emergence of life. Quantum chemical investigations addressing these Gly-related events have been performed, providing fundamental atomic-scale information and quantitative energetic data. However, they are spread in the literature and difficult to harmonize in a consistent way due to different computational chemistry methodologies and model systems. This review aims to collect the work done so far to characterize, at a quantum mechanical level, the chemical life of Gly, i.e., from its synthesis in the interstellar medium up to its polymerization on Earth.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
astrochemistry; computational chemistry; interstellar grains; metadynamics; potential energy surfaces; prebiotic chemistry; primitive Earth; surface modelling; Cosmic Dust; Earth, Planet; Evolution, Chemical; Glycine; Extraterrestrial Environment; Meteoroids
Elenco autori:
Rimola A.; Balucani N.; Ceccarelli C.; Ugliengo P.
Autori di Ateneo:
UGLIENGO Piero
Link alla scheda completa:
https://iris.unito.it/handle/2318/1858802
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/1858802/989938/5o.pdf
Pubblicato in:
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Journal
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URL

https://www.mdpi.com/1422-0067/23/8/4252
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