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Examination of Optically Excited Amino-acids by Electron Spin Resonance at Very Low Temperature

Abstract

INVESTIGATIONS carried out in our laboratory1 on the optical behaviour of serum-albumin protein and of its main constituents have not given any serious evidence of the photo-conduct or behaviour of the protein. Things are exactly as if each amino-acid, taking off a fraction of the quantum it absorbs selectively, reacted independently from its partners. The time of radiative deactivation by slow fluorescence is the only factor varying with the association process and the chemical purity of the aggregate.

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References

  1. Douzou, P., and Francq, J. C., J. Chim. Phys. (in the press).

  2. Allen, B. T., and Ingram, D. J. E., in Free Radicals in Biological Systems, 215 (Academic Press, 1960).

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  3. Gordy, W., Ard, W. B., and Shields, H., Proc. U.S. Nat. Acad. Sci., 41, 983 (1955).

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DOUZOU, P., PTAK, M. & ROPARS, C. Examination of Optically Excited Amino-acids by Electron Spin Resonance at Very Low Temperature. Nature 197, 1105–1106 (1963). https://doi.org/10.1038/1971105a0

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