Spectrofluorimetric techniques in the study of the interaction between fluorescent dyes and proteins or nuclear acids.

After a review of the applications of spectrofluorimetric techniques to the study of ligand--biological substrate interactions, mention is made of the main fluorescent dyes used for the demonstration of structural characteristics and conformational alterations in proteins, nucleic acids, etc. The possibilities of using new compounds recommended in the literature (fluorescamine, fluoropa, a.o.) for the identification and study of proteins are analysed and original investigations with newly synthesized fluorescent compounds (anthraquinone dyes, anhydrides of peridicarboxylic acids, Tb3+ and Sm3+ complexes of the pyridine -2,6-dicarboxylic acid) are presented.