Nonracemic isovaline in the Murchison meteorite: chiral distribution and mineral association
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Unequal amounts of enantiomers were found in Murchison meteorite with a quasi-exclusive predominance for (S)-amino acids, ranging from 0 to 26.3 +/- 0.8% e.e. values, with the highest e.e. measured for non-proteinogenic alpha-methyl amino acids.
“Unequal amounts of enantiomers were also found with a quasiexclusive predominance for (S)-amino acids 57,285,[438][439][440] ranging from 0 to 26.3 Æ 0.8% e.e. values (highest e.e. being measured for non-proteinogenic a-methyl amino acids), 441”
From Possible chemical and physical scenarios towards biological homochirality (2022) · cites this paper as [285]
The high enantiomeric excesses detected for (S)-isovaline in certain stones of the Murchison meteorite, up to 15.2 +/- 0.2%, suggest that CPL alone cannot be at the origin of this enantioenrichment.
“The high enantiomeric excesses detected for (S)-isovaline in certain stones of the Murchison's meteorite (up to 15.2 Æ 0.2%) suggested that CPL alone cannot be at the origin of this enantioenrichment.285”
From Possible chemical and physical scenarios towards biological homochirality (2022) · cites this paper as [285]
There likely were biases in the inventory of compounds delivered to the Earth by comets and meteorites.
“There likely were biases in the inventory of compounds delivered to the Earth by comets and meteorites (Cronin and Pizzarello 1997;Engel and Macko 1997;Pizzarello et al. 2003;Glavin and Dworkin 2009).”
From Protocells and RNA Self-Replication (2018) · cites this paper as Pizzarello et al. 2003
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References 31 · Cited by 222
- Authors
- Pizzarello, S., Zolensky, M., & Turk, K. A.
- Affiliations
- Arizona State University (US)
- Johnson Space Center (US)
- Ames Research Center (US)
- Corresponding author
- Pizzarello, Sandra
- Venue
- Geochimica et Cosmochimica Acta
- Publisher
- Elsevier BV
- Published
- 2003-04
- Volume
- 67
- Issue
- 8
- Pages
- 1589-1595
- ISSN
- 0016-7037 (ISSN-L)
- OpenAlex
- W1991695179
- Cited by
- 222
- References
- 31
- Citations by year
- 2026: 3 · 2025: 10 · 2024: 5 · 2023: 8 · 2022: 9 · 2021: 6 · 2020: 11 · 2019: 8 · 2018: 16 · 2017: 5 · 2016: 9 · 2015: 8 · 2014: 18 · 2013: 7 · 2012: 14
- FWCI
- 7.13
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Geochimica et Cosmochimica Acta (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astro and Planetary Science
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Space Science and Extraterrestrial Life
- Keywords
- isovaline, Murchison meteorite, Murray meteorite, enantiomeric excess, carbon isotopes, meteoritic amino acids, circularly polarized light, hydrous silicates, meteorite mineralogy
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