The Diversity of Meteoritic Amino Acids: Variations in Abundance and Enantiomeric Composition and Implications for Exobiology
نویسندگان
چکیده
Implications for Exobiology. J. E. Elsila, A. S. Burton, J. C. Aponte, D. G. Blackmond, J. P. Dworkin, and D. P. Glavin, NASA Goddard Space Flight Center, Greenbelt, MD 20771, Astromaterials Research and Exploration Science Division, NASA Johnson Space Center, Mail Code XI3, Houston, TX 77058, Catholic University of America, Washington, DC 20064, Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037, Email: [email protected]
منابع مشابه
Meteoritic Amino Acids: Diversity in Compositions Reflects Parent Body Histories
The analysis of amino acids in meteorites dates back over 50 years; however, it is only in recent years that research has expanded beyond investigations of a narrow set of meteorite groups (exemplified by the Murchison meteorite) into meteorites of other types and classes. These new studies have shown a wide diversity in the abundance and distribution of amino acids across carbonaceous chondrit...
متن کاملAssessing the origins of aliphatic amines in the Murchison meteorite from their compound-specific carbon isotopic ratios and enantiomeric composition
The study of meteoritic organic compounds provides a unique window into the chemical inventory of the early Solar System and prebiotic chemistry that may have been important for the origin of life on Earth. Multiple families of organic compounds have been extracted from the Murchison meteorite, which is one of the most thoroughly studied carbonaceous chondrites. The amino acids extracted from M...
متن کاملLarge enantiomeric excesses in primitive meteorites and the diverse effects of water in cosmochemical evolution.
Carbonaceous chondrites are meteoritic fragments of asteroids that avoided the geological reprocessing of larger planets and allow laboratory probing of early solar-nebula materials. Among these, Renazzo-type (CR) chondrites found in Antarctica appear remarkably pristine and are distinguished by abundant organic materials and water-soluble molecules such as amino acids and ammonia. We present a...
متن کاملPhytoplankton composition and diversity in Gorgan Bay, Golestan province
This study was carried out to investigate the phytoplankton composition in Gorgan Bay. Water samples were collected from 11 selected sites in Golestan bay, monthly from March to February. Thirty five genus were identified among which Bacillariophyta was the dominate group with 17 genus, while the Euglenophyta had the minimum. Abundance and biomass of phytoplankton showed spatial and temporal va...
متن کامل