Japan Geoscience Union Meeting 2018

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[EE] Poster

B (Biogeosciences) » B-AO Astrobiology & the Origin of Life

[B-AO01] Astrobiology

Tue. May 22, 2018 1:45 PM - 3:15 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Hikaru Yabuta(Hiroshima University, Department of Earth and Planetary Systems Science), Seiji Sugita(Department of Earth and Planetary Science, Graduate School of Science Sciece, The University of Tokyo), Misato Fukagawa(名古屋大学, 共同), Fujishima Kosuke(Tokyo Institute of Technology, Earth-Life Science Institute)

[BAO01-P06] A scenario of chiral amino acid evolution initiated with chiral alanine

*Toratane Munegumi1 (1.Department of Science Education, Naruto University of Education)

Keywords:homochirality of amino acids, chemical evolution, alanine

DNA encoding amino acids except of glycine have L-form homochiral structure. The chemical evolutionary process for amino acids to reach the homochiral structure has not been elucidated in detailed. However, considering in structural analogy among DNA encoding amino acids will give an insight us about the root from a simple chiral amino acid: L-alanine. The research proposes a chemical evolutionary tree of chiral amino acids from L-alanine. Some reasons will be shown from the viewpoints of chemical reactivity and the combination of codon bases.