Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1907169116 |
Extraterrestrial ribose and other sugars in primitive meteorites | |
Yoshihiro Furukawa; Yoshito Chikaraishi; Naohiko Ohkouchi; Nanako O. Ogawa; Daniel P. Glavin; Jason P. Dworkin; Chiaki Abe; and Tomoki Nakamura | |
2019 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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出版年 | 2019 |
英文摘要 | AbstractSugars are essential molecules for all terrestrial biota working in many biological processes. Ribose is particularly essential as a building block of RNA, which could have both stored information and catalyzed reactions in primitive life on Earth. Meteorites contain a number of organic compounds including key building blocks of life, i.e., amino acids, nucleobases, and phosphate. An amino acid has also been identified in a cometary sample. However, the presence of extraterrestrial bioimportant sugars remains unclear. We analyzed sugars in 3 carbonaceous chondrites and show evidence of extraterrestrial ribose and other bioessential sugars in primitive meteorites. The 13C-enriched stable carbon isotope compositions (δ13C vs. VPDB) of the detected sugars show that the sugars are of extraterrestrial origin. We also conducted a laboratory simulation experiment of a potential sugar formation reaction in space. The compositions of pentoses in meteorites and the composition of the products of the laboratory simulation suggest that meteoritic sugars were formed by formose-like processes. The mineral compositions of these meteorites further suggest the formation of these sugars both before and after the accretion of their parent asteroids. Meteorites were carriers of prebiotic organic molecules to the early Earth; thus, the detection of extraterrestrial sugars in meteorites establishes the existence of natural geological routes to make and preserve them as well as raising the possibility that extraterrestrial sugars contributed to forming functional biopolymers like RNA on the early Earth or other primitive worlds. |
英文关键词 | meteorite carbohydrate exogenous delivery ribose RNA |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/205230 |
专题 | 地球科学 资源环境科学 气候变化 |
推荐引用方式 GB/T 7714 | Yoshihiro Furukawa,Yoshito Chikaraishi,Naohiko Ohkouchi,et al. Extraterrestrial ribose and other sugars in primitive meteorites[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019. |
APA | Yoshihiro Furukawa.,Yoshito Chikaraishi.,Naohiko Ohkouchi.,Nanako O. Ogawa.,Daniel P. Glavin.,...&and Tomoki Nakamura.(2019).Extraterrestrial ribose and other sugars in primitive meteorites.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. |
MLA | Yoshihiro Furukawa,et al."Extraterrestrial ribose and other sugars in primitive meteorites".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2019). |
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