3. Hexokinase catalyzes the first reaction in glycolysis and phosphorylates D-glucose to D-gluc 6-phosphate using ATP as the source of the phosphate. Under conditions of pH 7, 25°C and a Hexokinase concentration of 3.0 nmol/mL, the KM for Hexokinase for the substrate glucose was determined to be 3.0 x 10 M. a. When the glucose concentration was set to 160 μM, the initial rate of the reaction was found to be 65.0 μmol/(mL-s). What is Vmax for Hexokinase under these conditions? b. What is the turnover number for Hexokinase under these conditions? c. What is the catalytic efficiency for Hexokinase under these conditions?

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3. Hexokinase catalyzes the first reaction in glycolysis and phosphorylates D-glucose to D-glucose
6-phosphate using ATP as the source of the phosphate. Under conditions of pH 7, 25°C and a
Hexokinase concentration of 3.0 nmol/mL, the KM for Hexokinase for the substrate glucose was
determined to be 3.0 x 10 M.
a. When the glucose concentration was set to 160 μM, the initial rate of the reaction was
found to be 65.0 μmol/(mL s). What is Vmax for Hexokinase under these conditions?
b. What is the turnover number for Hexokinase under these conditions?
c. What is the catalytic efficiency for Hexokinase under these conditions?
Transcribed Image Text:3. Hexokinase catalyzes the first reaction in glycolysis and phosphorylates D-glucose to D-glucose 6-phosphate using ATP as the source of the phosphate. Under conditions of pH 7, 25°C and a Hexokinase concentration of 3.0 nmol/mL, the KM for Hexokinase for the substrate glucose was determined to be 3.0 x 10 M. a. When the glucose concentration was set to 160 μM, the initial rate of the reaction was found to be 65.0 μmol/(mL s). What is Vmax for Hexokinase under these conditions? b. What is the turnover number for Hexokinase under these conditions? c. What is the catalytic efficiency for Hexokinase under these conditions?
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