Preparation and Study of a Fluorescent Sugar Analog Competitive Inhibitor of Yeast Hexokinase

Abstract
The preparation of 2-deoxy-2-amino-N-(5-dimethylamino-l-naphthalene sulfonyl)-glucose (III) designed as a fluorescent competitive inhibitor of hexokinase was achieved after reacting 2-deoxy-2-aminoglucose and l-dimethylamino-5-naphthalene sulfonyl chloride. (III) showed fluorescence excitation and emission maxima in water at 330 and 507 nm, respectively. (III) was found to competitively inhibit hexokinase and a value of Ki = 3.0 × 10−3 M was obtained for the system hexokinase B + Mg. ATP + glucose at pH 8.4.