Insights into the formation and evolution of extraterrestrial amino acids from the asteroid Ryugu

Author:

Potiszil ChristianORCID,Ota TsutomuORCID,Yamanaka MasahiroORCID,Sakaguchi ChieORCID,Kobayashi KatsuraORCID,Tanaka Ryoji,Kunihiro Tak,Kitagawa Hiroshi,Abe Masanao,Miyazaki AkikoORCID,Nakato Aiko,Nakazawa SatoruORCID,Nishimura Masahiro,Okada TatsuakiORCID,Saiki Takanao,Tanaka Satoshi,Terui Fuyuto,Tsuda Yuichi,Usui TomohiroORCID,Watanabe Sei-ichiroORCID,Yada ToruORCID,Yogata KasumiORCID,Yoshikawa Makoto,Nakamura EizoORCID

Abstract

AbstractAll life on Earth contains amino acids and carbonaceous chondrite meteorites have been suggested as their source at the origin of life on Earth. While many meteoritic amino acids are considered indigenous, deciphering the extent of terrestrial contamination remains an issue. The Ryugu asteroid fragments (JAXA Hayabusa2 mission), represent the most uncontaminated primitive extraterrestrial material available. Here, the concentrations of amino acids from two particles from different touchdown sites (TD1 and TD2) are reported. The concentrations show that N,N-dimethylglycine (DMG) is the most abundant amino acid in the TD1 particle, but below detection limit in the other. The TD1 particle mineral components indicate it experienced more aqueous alteration. Furthermore, the relationships between the amino acids and the geochemistry suggest that DMG formed on the Ryugu progenitor body during aqueous alteration. The findings highlight the importance of aqueous chemistry for defining the ultimate concentrations of amino acids in primitive extraterrestrial samples.

Funder

Ministry of Education, Culture, Sports, Science and Technology

Publisher

Springer Science and Business Media LLC

Subject

General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry,Multidisciplinary

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3