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Photosensitization of small peptides by proflavine: An E.S.R. study at low temperature (1974)

Lion, Yves ; Vorst, Albert

Springer

Radiation and environmental biophysics 11 (1974), S. 239-245

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ISSN: 1432-2099

Source: Springer Online Journal Archives 1860-2000

Topics: Biology , Physics

Notes: Summary The photosensitization by proflavine of dipeptides containing glycine and histidine, methionme, tryptophan or tyrosine is studied by ESR spectroscopy at 77 °K. It is shown that the induced free radicals are never localized in glycine but for a large part in the other constituent ammo-acid. Furthermore, and in contradiction with the conclusions reached by other physico-chemical techniques, experimental evidences are presented hi favor of the induction of a free radical associated with the breakage of the peptide bond.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01323193

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