Amino Acid Analyses of the Antarctic Cm2 Meteorites Alh 83100 and Lew 90500 Using Liquid Chromatography-time of Flight-mass Spectrometry
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Enrichment of L-isovaline by Aqueous Alteration on Ci and Cm Meteorite Parent
Introduction: The finding of slight to significant enanti-omeric excesses for several indigenous amino acids in the Mur-chison and Murray CM-type meteorites [1-3] could point toward an exogenous origin of biological homochirality on the early Earth. UV circularly polarized light (UV-CPL) in the presolar cloud has been proposed as one possible source of the initial amino acid symmetry [4]. Howev...
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Introduction: Meteorites provide a record of the chemical processes that occurred in the early solar system before life began on Earth. The delivery of organic compounds by carbonaceous meteorites to the early Earth and other planetary bodies could have been an important source of prebiotic compounds required for the emergence of life as we know it [1]. The finding of slight to significant enan...
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تاریخ انتشار 2005