Table 1. Comparison of electroanalytical and electrocatalytical characteristics of the proposed modifications of the electrode surface in order to increase the efficiency of electrocatalysis

Electrode

Ered, V

Ecat, V

Eonset, V

IO2,

A×10-7

IEr,

A×10-7

IEr/IO2

Vmax,M/min

SPE/DDAB/CYP3A4

-0.438±0.006

-0.438±0.006

-0.228±0.003

-3.71±0.51

-6.05±0.63

1.63±0.14

9.21±1.69×10–11

SPE/DDAB/CYP3A4+FMN

-0.452±0.01

-0.439±0.012

-0.184±0.006

-7.47±1.32

-4.83±1.2

0.65±0.15

1.87±0.19×10–10

SPE/DDAB/CYP3A4+FAD

-0.462±0.001

-0.459±0.006

-0.201±0.002

-8.25±1.13

-6.26±1.21

0.75±0.05

1.58±0.14×10-10

SPE/DDAB/CYP3A4+riboflavin

-0.457±0.007

-0.447±0.007

-0.211±0.003

-7.14±2.29

-6.01±0.34

0.89±0.25

1.24±0.07×10-10

SPE/Anodisc 100 μm/DDAB/CYP3A4

-0.368±0.005

-0.385±0.021

-0.205±0.008

-1.01±0.43

-1.30±0.83

1.12±0.8

1.01±0.04×109

SPE /Anodisc 200 μm/DDAB/

CYP3A4

-0.342±0.022

-0.402±0.013

-0.229±0.005

-1.61±0.82

-1.07±0.76

0.73±0.13

5.73±0.3×10-10

SPE/DDAB/SLO/CYP3A4

-0.462±0.001

-0.445±0.006

-0.264±0.020

-9.01±1.59

-12.22±2.49

1.57±0.17

4.52±0.33×10-10

SPE/DDAB/CYP3A4BR

-0.432±0.014

-0.417±0.023

-0.294±0.006

-2.36±0.79

-2.81±0.53

1.19±0.17

2.34±0.48×10-10

Note. Ered - peak potential of CYP reduction; Ecat -peak potential of CYP reduction in the presence of substrate; Eonset -substrate catalysis initiation potential; IO2, catalytic current of cytochrome P450 reduction in the presence of oxygen; IEr - catalytic current of cytochrome P450 reduction in the presence of substrate; Vmax - maximum rate of enzymatic electrocatalytic reaction. The results were obtained from 3 experiments.