Author
Listed:
- Christian Potiszil
(Okayama University)
- Tsutomu Ota
(Okayama University)
- Masahiro Yamanaka
(Okayama University)
- Chie Sakaguchi
(Okayama University)
- Katsura Kobayashi
(Okayama University)
- Ryoji Tanaka
(Okayama University)
- Tak Kunihiro
(Okayama University)
- Hiroshi Kitagawa
(Okayama University)
- Masanao Abe
(Japan Aerospace Exploration Agency
The Graduate University for Advanced Studies (SOKENDAI))
- Akiko Miyazaki
(Japan Aerospace Exploration Agency)
- Aiko Nakato
(Japan Aerospace Exploration Agency)
- Satoru Nakazawa
(Japan Aerospace Exploration Agency)
- Masahiro Nishimura
(Japan Aerospace Exploration Agency)
- Tatsuaki Okada
(Japan Aerospace Exploration Agency
University of Tokyo)
- Takanao Saiki
(Japan Aerospace Exploration Agency)
- Satoshi Tanaka
(Japan Aerospace Exploration Agency
The Graduate University for Advanced Studies (SOKENDAI)
University of Tokyo)
- Fuyuto Terui
(Japan Aerospace Exploration Agency
Kanagawa Institute of Technology)
- Yuichi Tsuda
(Japan Aerospace Exploration Agency
The Graduate University for Advanced Studies (SOKENDAI))
- Tomohiro Usui
(Japan Aerospace Exploration Agency)
- Sei-ichiro Watanabe
(Nagoya University)
- Toru Yada
(Japan Aerospace Exploration Agency)
- Kasumi Yogata
(Japan Aerospace Exploration Agency)
- Makoto Yoshikawa
(Japan Aerospace Exploration Agency
The Graduate University for Advanced Studies (SOKENDAI))
- Eizo Nakamura
(Okayama University)
Abstract
All 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.
Suggested Citation
Christian Potiszil & Tsutomu Ota & Masahiro Yamanaka & Chie Sakaguchi & Katsura Kobayashi & Ryoji Tanaka & Tak Kunihiro & Hiroshi Kitagawa & Masanao Abe & Akiko Miyazaki & Aiko Nakato & Satoru Nakazaw, 2023.
"Insights into the formation and evolution of extraterrestrial amino acids from the asteroid Ryugu,"
Nature Communications, Nature, vol. 14(1), pages 1-7, December.
Handle:
RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-37107-6
DOI: 10.1038/s41467-023-37107-6
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