918 



LIGHT AND LIFE 



Excitation energy transfer, protein fluor- 

 escence and: 122 



Excitation spectra: of chymotrypsin, 96; 

 of pepsin, 96 



Excited states: anthracyl isocyanate con- 

 jugates, 82; aromatic amino acids, 82; 

 of artificially coupled moieties, 94; 

 carotenoids, 82; dimethylaminonaph- 

 thalcne conjugates, 82; flavin adenine 

 dinucleotide, 82; flavin mononucleo- 

 tide, 82; fluorescein isocyanates, 82 



Excited states, heme: 82 



Excited states, of molecules: of biologi- 

 cal interest, 80; geometry of, 18 



Excited states and molecular structure: 

 1; of proteins, 82, 95; radical-like, 54 



Fannia: 772 



Firefly: 211 



Firefly bioluminescence: effect of phos- 

 phate, 247; emission spectra, 245, 247; 

 quantum yield, 244, 246 



Firefly extracts, light emission in: 220 



Firefly luciferin, structure: 254 



Firefly luminescence: 220 



Flash photolysis: 70 



Flavin adenine dinucleotide: conforma- 

 tion, 132; excitation spectrum of, 133; 

 excited states, 82 



Flavin and flavoprotein, complexes and 

 semiquinones: 163 



Flavin mononucleotide: and bacterial 

 luminescence, 250; and dihydrothioc- 

 tate, spectrum complex of, 160; emis- 

 sions of, 132; excited states, 82; fluor- 

 escence quantum yields, 133; tempera- 

 ture and solvent effects on, 132 



Flavin nucleotides: 132; spectra and 

 structure in enzyme complexes of, 108 



Flavins and flavoproteins: changes in ab- 

 sorption spectra, 164; and semiquinone 

 formation, 167 



Flavoprotein oxidation-reduction, free 

 radical formation: 142 



Flavoprotein spectrum, schematic repre- 

 sentation of: 164 



Flavoproteins: flavins and semiquinone 



formation, 167; and molecular oxygen, 

 138 



Flowering in the lemnaceae: 674 



Fluorescein isocyanates, excited states: 

 82 



Fluorescence: acid quenching of tyrosine 

 derivatives of, 84; of 3-aminopyridine- 

 DPN, 155; of bound DPNH, 119 



Fluorescence: and chemiluminescence, 

 spectra of zinc tetraphenylporphine, 

 178; and chemiluminescence values for 

 the phtiialazinediones, 186; emission 

 band of glycerophosphate dehydro- 

 genase, 125; emission bands of glycerol 

 phosphate dehydrogenase, 123; emis- 

 sion bands of lactic acid dehydroge- 

 nase, 123; excitation of emission bands 

 of lactic acid dehydrogenase, 124; exci- 

 tation spectrum, 87; excitation spec- 

 trum of bovine serum albumin, effect 

 of digestion with chymotrypsin upon, 

 103; of indole and phenol derivatives, 

 pH effect, 85; lifetime and polarization, 

 98; of Ochromonas danica, 481; of 

 oxyluciferyl-adenylic acid, 226; oxy- 

 luciferyl-CoA, effect of cysteine on, 

 233; of phenol and indole derivatives 

 by hydroxyalanine, quenching of, 86; 

 polarization, 102; polarization of 

 emitted, 88; protein and transfer of ex- 

 citation energy, 122; quenching, 53; 

 spectra of Chlorella. 349; spectra of 

 spinacli cliloroplasts, 348; yields of 

 luciferin and oxyluciferin, 242 



Fluorescence quantum yield: of amino- 

 phthalic acid as a function of pH. 

 203; of dinucleotide, 133; of luminol 

 as a fimction of pH, 202; of flavin 

 mononucleotide, 133 



Kranck-Condon principle: 13 



Fucoxanthin: 459 



Fungal bioluminescence: 262; effect of 

 crystalizing bovine plasma addition, 

 265; inhibitors of, 272 



(Ganglion (cll: response of wilii change 

 in wavelength of stimulus, 803; re- 

 sponse with change in intensity, 807; 



