Detection of thymidine kinase activity using an assay based on the precipitation of nucleoside monophosphates with lanthanum chloride.
R M Wolcott, J M Colacino
Index: Anal. Biochem. 178(1) , 38-40, (1989)
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Abstract
A new assay method for the measurement of thymidine kinase (TK) is described. Cytosols were prepared from TK- and TK+ cells and evaluated for TK activity using an assay which is based on the phosphorylation of [125I]-iododeoxyuridine, [125I]-iododeoxycytidine, or [3H]thymidine and the precipitation of the monophosphates of these nucleosides by lanthanum chloride. The specificity, reproducibility, sensitivity, and convenience of this assay are demonstrated.
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