Fluorescence energy transfer studies of human deoxycytidine kinase: role of cysteine 185 in the conformational changes that occur upon substrate binding.

Abstract

Human deoxycytidine kinase (dCK) phosphorylates both pyrimidine and purine deoxynucleosides, including numerous nucleoside analogue prodrugs. Energy transfer studies of transfer between Trp residues of dCK and the fluorescent probe N-(1-pyrene)maleimide (PM), which specifically labels Cys residues in proteins, were performed. Two of the six Cys residues in… (More)

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