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One-Pot Hydrogen Cyanide-Based Prebiotic Synthesis of Canonical Nucleobases and Glycine Initiated by High-Velocity Impacts on Early Earth.
Astrobiology ( IF 4.2 ) Pub Date : 2020-12-14 , DOI: 10.1089/ast.2020.2231
Martin Ferus 1 , Paul Rimmer 2, 3, 4 , Giuseppe Cassone 5 , Antonín Knížek 1, 6 , Svatopluk Civiš 1 , Judit E Šponer 7 , Ondřej Ivanek 1 , Jiří Šponer 7 , Homa Saeidfirozeh 1 , Petr Kubelík 1, 8 , Roman Dudžák 8, 9 , Lukáš Petera 1, 6 , Libor Juha 8, 9 , Adam Pastorek 1, 10 , Anna Křivková 1, 10 , Miroslav Krůs 9
Affiliation  

Chemical environments of young planets are assumed to be significantly influenced by impacts of bodies lingering after the dissolution of the protoplanetary disk. We explore the chemical consequences of impacts of these bodies under reducing planetary atmospheres dominated by carbon monoxide, methane, and molecular nitrogen. Impacts were simulated by using a terawatt high-power laser system. Our experimental results show that one-pot impact-plasma-initiated synthesis of all the RNA canonical nucleobases and the simplest amino acid glycine is possible in this type of atmosphere in the presence of montmorillonite. This one-pot synthesis begins with de novo formation of hydrogen cyanide (HCN) and proceeds through intermediates such as cyanoacetylene and urea.

中文翻译:

由对早期地球的高速撞击引发的经典核碱基和甘氨酸的一锅基于氰化氢的益生元合成。

假设年轻行星的化学环境受到原行星盘溶解后残留的物体的影响的显着影响。我们探索了这些天体在以一氧化碳、甲烷和分子氮为主的行星大气减少的情况下撞击的化学后果。撞击是通过使用太瓦高功率激光系统来模拟的。我们的实验结果表明,在蒙脱石存在的这种类型的气氛中,所有 RNA 经典核碱基和最简单的氨基酸甘氨酸的一锅碰撞等离子体引发的合成是可能的。这种一锅法合成从从头形成氰化氢 (HCN) 开始,然后通过氰基乙炔和尿素等中间体进行。
更新日期:2020-12-16
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