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  • Title: Biochemical characterization of Ca2+/calmodulin dependent protein kinase from Candida albicans.
    Author: Dhillon NK, Sharma S, Khuller GK.
    Journal: Mol Cell Biochem; 2003 Oct; 252(1-2):183-91. PubMed ID: 14577592.
    Abstract:
    A multifunctional Ca2+/calmodulin dependent protein kinase was purified approximately 650 fold from cytosolic extract of Candida albicans. The purified preparation gave a single band of 69 kDa on sodium dodecyl sulfate polyacrylamide gel electrophoresis with its native molecular mass of 71 kDa suggesting that the enzyme is monomeric. Its activity was dependent on calcium, calmodulin and ATP when measured at saturating histone IIs concentration. The purified Ca2+/CaMPK was found to be autophosphorylated at serine residue(s) in the presence of Ca2+/calmodulin and enzyme stimulation was strongly inhibited by W-7 (CaM antagonist) and KN-62 (Ca2+/CaM dependent PK inhibitor). These results confirm that the purified enzyme is Ca2+/CaM dependent protein kinase of Candida albicans. The enzyme phosphorylated a number of exogenous and endogenous substrates in a Ca2+/calmodulin dependent manner suggesting that the enzyme is a multifunctional Ca2+/calmodulin-dependent protein kinase of Candida albicans.
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