Isolation of Calmodulin from the Protozoan, Tetrahymena pyriformis, by the Use of a Tubulin-Sepharose 4B Affinity Column1

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Abstract
We developed a simple new method for the isolation of calmodulin, a ubiquitous Ca2+-binding protein, by using tubulin-Sepharose 4B column chromatography, and succeeded in rapid isolation of calmodulin from Tetrahymena pyriformis. The procedure was also shown to be successfully applicable to the isolation of calmodulins from starfish ovary, porcine brain, and monkey brain and, therefore, may be of general use for the rapid isolation of calmodulin.