title: Indirect EPR evidence for the production of singlet oxygen in the photosensitization of nucleic acid constituents by proflavine.
abstract: EPR spectroscopy is used to analyse the influence of D2O and NaN3 on the free radicals induced in frozen aqueous solutions of 5'-thymidine monophosphate photosensitized (lambda greater than 320 nm) by proflavine at 205 K. The results can be explained if the production of singlet oxygen during the process is assumed.
mesh_terms: D000166:Acridines; D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals; D008027:Light; D010084:Oxidation-Reduction; D010100:Oxygen; D010777:Photochemistry; D011370:Proflavine; D013942:Thymine Nucleotides
chemical_list: D000166:Acridines; D005609:Free Radicals; D013942:Thymine Nucleotides; D011370:Proflavine; D010100:Oxygen