Alanine enantiomers in the Murchison meteorite

Details Alanine enantiomers in the Murchison meteorite Alanine enantiomers in the Murchison meteorite

Jul 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998natur.394..236p&link_type=abstract

Nature, Volume 394, Issue 6690, pp. 236 (1998).

Computer Science

10

Scientific paper

Engel and Macko have reported that alanine indigenous to the Murchison meteorite has an L-enantiomer excess of about 33%. Furthermore, they reported very similar δ15nitrogen values for L-alanine and D-alanine; these values are quite high in comparison with those of terrestrial amino acids. On this basis, they argued that contamination of the meteorite by terrestrial L-alanine can be ruled out because, if it contributed to the L-enantiomer excess, the lower 15N content of terrestrial L-alanine would significantly lower the δ15N value that they observed for L-alanine.

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