A Flow Method for Determination of the Kinetic Parameters for Immobilized Enzymes

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Abstract
A flow method is described for determination of the kinetic parameters (Vm and Km) for enzymes that are bound to particles, to membranes, and to the interior surfaces of tubes. Substrate solution is pumped through Tygon tubing to a microvolume flow cell and back into the reaction mixture, the flow rate being adjusted to be faster than the rate of formation of product. To illustrate the technique, it is applied to the determination of the parameters for electric-eel acetylcholinesterase attached to particles, to membranes, and to the inner surface of nylon tubing.

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