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[The presence of calmodulin in chemosensory structures, its purification and content].

Chemosensory tissues, bovine olfactory epithelium and barbel of dwarf sheat-fish (Ictalurus nebulosus) rich in gustatory buds were shown to contain calmodulin. The fraction of thermostable proteins which activate brain phosphodiesterase of cyclic nucleotides was purified to homogeneity by stepwise ion-exchange chromatography on DEAE-cellulose and gel filtration on Sephacryl S-300. Some properties of calmodulin from chemosensory tissues (e. g., content, molecular weight, electrophoretic mobility, degree of activation of phosphodiesterase) are similar to those of brain calmodulin.