Miyakawa, Shin’s team published research in Proceedings of the National Academy of Sciences of the United States of America in 2002-11-12 | 15837-41-9

Proceedings of the National Academy of Sciences of the United States of America published new progress about Life, origin. 15837-41-9 belongs to class pyrimidines, and the molecular formula is C4H4N2O2, Related Products of 15837-41-9.

Miyakawa, Shin; Yamanashi, Hiroto; Kobayashi, Kensei; Cleaves, H. James; Miller, Stanley L. published the artcile< Prebiotic synthesis from CO atmospheres: implications for the origins of life>, Related Products of 15837-41-9, the main research area is carbon monoxide primordial atm prebiotic amino acid life origin.

Most models of the primitive atm. around the time life originated suggest that the atm. was dominated by carbon dioxide, largely based on the notion that the atm. was derived via volcanic outgassing, and that those gases were similar to those found in modern volcanic effluent. These models tend to downplay the possibility of a strongly reducing atm., which had been thought to be important for prebiotic synthesis and thus the origin of life. However, there is no definitive geol. evidence for the oxidation state of the early atm. and bioorganic compounds are not efficiently synthesized from CO2 atmospheres. In the present study, proton-beam irradiation of equimol. mixtures of CO and N2 in the presence of water induced abiotic synthesis of uracil, orotic acid, 5-hydroxyuracil, nicotinic acid, and 4,5-dihydroxypyrimidine. This and similar previous observations suggest that a CO-CO2-N2-H2O atm. can give a variety of bioorganic compounds with yields comparable to those obtained from a strongly reducing atm. Atmospheres containing carbon monoxide might therefore have been conducive to prebiotic synthesis and perhaps the origin of life. CO-dominant atmospheres could have existed if the production rate of CO from impacts of extraterrestrial materials were high or if the upper mantle had been more reduced than today.

Proceedings of the National Academy of Sciences of the United States of America published new progress about Life, origin. 15837-41-9 belongs to class pyrimidines, and the molecular formula is C4H4N2O2, Related Products of 15837-41-9.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia