S
Sandra Pizzarello
Researcher at Arizona State University
Publications - 80
Citations - 6802
Sandra Pizzarello is an academic researcher from Arizona State University. The author has contributed to research in topics: Murchison meteorite & Chondrite. The author has an hindex of 44, co-authored 80 publications receiving 6375 citations.
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Journal ArticleDOI
Enantiomeric Excesses in Meteoritic Amino Acids
John R. Cronin,Sandra Pizzarello +1 more
TL;DR: Gas chromatographic-mass spectral analyses of the four stereoisomers of 2-amino-2,3-dimethylpentanoic acid obtained from the Murchison meteorite show that the L enantiomer occurs in excess, indicative of an asymmetric influence on organic chemical evolution before the origin of life.
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Non-racemic amino acids in the Murray and Murchison meteorites.
Sandra Pizzarello,John R. Cronin +1 more
TL;DR: The alpha-methyl-alpha-amino alkanoic acids could have been significant in the origin of terrestrial homochirality given their resistance to racemization and the possibility for amplification of their enantiomeric excesses suggested by the strong tendency of their polymers to form chiral secondary structure.
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Prebiotic Amino Acids as Asymmetric Catalysts
TL;DR: The exogenous delivery of cometary and asteroidal material is observed today and undoubtedly has showered the Earth through its prior history because carbonaceous meteorites contain amino acids displaying asymmetry that has the same sign (L) as terrestrial amino acids.
Journal ArticleDOI
Amino acids in meteorites
John R. Cronin,Sandra Pizzarello +1 more
TL;DR: The Murchison meteorite has recently been the major source of new naturally-occurring amino acids, and thirty three of these amino acids are unknown in natural materials other than carbonaceous chondrites.
Organic matter in carbonaceous chondrites, planetary satellites, asteroids and comets
TL;DR: A detailed review of organic compounds found in carbonaceous chondrite meteorites, especially the Murchison meteorite, and detected spectroscopically in other solar-system objects is given in this article.