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Unusual stable isotope ratios in amino acid and carboxylic acid extracts from the Murchison meteorite

Nature volume 326, pages 477–479 (1987)Cite this article

Abstract

Much effort has been directed to analyses of organic compounds in carbonaceous chondrites because of their implications for organic chemical evolution and the origin of life. We have determined the isotopic composition of hydrogen, nitrogen and carbon in amino acid and monocarboxylic acid extracts from the Murchison meteorite. The unusually high D/H and 15N/14N ratios in the amino acid fraction (δD = 1,370‰, after correction for isotope exchange; δ15N =90) are uniquely characteristic of known interstellar organic materials. The δD value of the monocarboxylic acid fraction is lower (377‰), but still consistent with an interstellar origin. These results confirm the extraterrestrial origin of both classes of compound, and provide the first evidence suggesting a direct relationship between the massive organo-synthesis occurring in interstellar clouds and the presence of pre-biotic compounds in primitive planetary bodies. The isotope data also bear on the historical problem of distinguishing indigenous material from terrestrial contaminants.1,2.

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References

  1. Cronin, J. R., Gandy, W. E. & Pizzarello, S. in Biogeochemistry of Amino Acids (eds Hare, P. E., Hoering, T. C. & King, K. Jr) (Wiley, New York, 1980).

    Google Scholar 

  2. Kvenvolden, K. A. et al. Nature 228, 923–926 (1970).

    Article  ADS  CAS  Google Scholar 

  3. Smith, J. W. & Kaplan, I. R. Science 167, 1367–1370 (1970).

    Article  ADS  CAS  Google Scholar 

  4. Chang, S. & Mack, R. Lunar planet. Sci. 9, 157–159 (1978).

    ADS  Google Scholar 

  5. Becker, R. H. & Epstein, S. Geochim. cosmochim. Acta 46, 97–103 (1982).

    Article  ADS  CAS  Google Scholar 

  6. Robert, F. & Epstein, S. Geochim. cosmochim. Acta 46, 81–95 (1982).

    Article  ADS  CAS  Google Scholar 

  7. Yang, J. & Epstein, S. Geochim. cosmochim. Acta 47, 2199–2216 (1983).

    Article  ADS  CAS  Google Scholar 

  8. Lewis, R. S., Anders, E., Wright, I. P., Norris, S. J. & Pillinger, C. T. Nature 305, 767–771 (1983).

    Article  ADS  CAS  Google Scholar 

  9. Kerridge, J. F. Earth planet. Sci. Lett. 64, 186–200 (1983).

    Article  ADS  CAS  Google Scholar 

  10. Cronin, J. R. & Pizzarello, S. Geochim. cosmochim. Acta 50, 2419–2427 (1986).

    Article  ADS  CAS  Google Scholar 

  11. Yuen, G., Blair, N., DesMarais, D. J. & Chang, S. Nature 307, 252–254 (1984).

    Article  ADS  CAS  Google Scholar 

  12. Pereira, W. E. et al. Geochim. cosmochim. Acta 39, 163–172 (1975).

    Article  ADS  CAS  Google Scholar 

  13. Wannier, P. G. A. Rev. Astr. Astrophys. 18, 399–437 (1980).

    Article  ADS  CAS  Google Scholar 

  14. Penzias, A. Science 208, 663–669 (1980).

    Article  ADS  CAS  Google Scholar 

  15. Geiss, J. & Reeves, H. R. Astr. Astrophys. 93, 189–199 (1981).

    ADS  CAS  Google Scholar 

Download references

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Authors and Affiliations

  1. Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California, 91125, USA

    S. Epstein & R. V. Krishnamurthy

  2. Department of Chemistry and Center for Meteorite Studies, Arizona State University, Tempe, Arizona, 85287, USA

    J. R. Cronin, S. Pizzarello & G. U. Yuen

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  1. S. Epstein
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  2. R. V. Krishnamurthy
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  3. J. R. Cronin
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  4. S. Pizzarello
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  5. G. U. Yuen
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Epstein, S., Krishnamurthy, R., Cronin, J. et al. Unusual stable isotope ratios in amino acid and carboxylic acid extracts from the Murchison meteorite. Nature 326, 477–479 (1987). https://doi.org/10.1038/326477a0

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