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  • Title: Interaction of calmodulin and glycogen phosphorylase.
    Author: Villar-Palasi C, Oshiro DL, Kretsinger RH.
    Journal: Biochim Biophys Acta; 1983 May 04; 757(1):40-6. PubMed ID: 6301561.
    Abstract:
    We have demonstrated the interaction of 125I-labeled calmodulin with glycogen phosphorylase by four techniques: polyacrylamide gel overlay, sucrose density centrifugation, gel filtration chromatography, and affinity chromatography. Phosphorylase b has more affinity for calmodulin than does phosphorylase a. Under all conditions tested, the presence of calmodulin affects neither the enzymatic activity nor any kinetic characteristics of phosphorylase a or b. We present these results as evidence that while binding between calmodulin and phosphorylase clearly exists, it may not have a physiological role.
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