Direct electrochemistry and intramolecular electron transfer of ascorbate oxidase confined on l-cysteine self-assembled gold electrode

Thermodynamics and kinetics of the adsorption of ASOM on the cys-SAM/AuE have been elaborated along with its direct electron transfer at the modified electrodes on the basis of its intramolecular electron transfer and electrocatalytic activity towards ascorbic acid oxidation and O2 reduction. ASOM saturated surface area was obtained as 2.41 × 10− 11 mol cm− 2 with the apparent adsorption coefficient of 1.63 × 106 L mol− 1. The ASOM confined on the cys-SAM/AuE possesses its essential enzymatic function.