Nonprotein amino acids in the murchison meteorite.

@article{Kvenvolden1971NonproteinAA,
  title={Nonprotein amino acids in the murchison meteorite.},
  author={Keith A. Kvenvolden and James G. Lawless and Cyril Ponnamperuma},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={1971},
  volume={68 2},
  pages={
          486-90
        }
}
Twelve nonprotein amino acids appear to be present in the Murchison meteorite. The identity of eight of them has been conclusively established as N-methylglycine, beta-alanine, 2-methylalanine, alpha-amino-n-butyric acid, beta-amino-n-butyric acid, gamma-amino-n-butyric acid, isovaline, and pipecolic acid. Tentative evidence is presented for the presence of N-methylalanine, N-ethylglycine, beta-aminoisobutyric acid, and norvaline. These amino acids appear to be extraterrestrial in origin and… Expand
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