Table 1 Binding affinity toward Trp, coupling efficiency, NADPH consumption and total turnover numbers of TxtE and its chimeras.

From: Engineered P450 biocatalysts show improved activity and regio-promiscuity in aromatic nitration

Chimeras

Kd (µM)

Coupling (%)

NADPH consumption (µM/min)

TTN

TxtE

24.8 ± 1.1

2.4 ± 0.3

42.3 ± 4.2

378 ± 17

TB11

16.2 ± 0.6

5.2 ± 0.5

32.8 ± 5.0

535 ± 28

TB12

22.3 ± 1.4

1.8 ± 0.2

86.3 ± 3.9

332 ± 40

TB13-Q

21.5 ± 0.8

2.0 ± 0.1

73.9 ± 3.8

308 ± 18

TB13S

19.3 ± 0.6

2.6 ± 0.2

30.8 ± 3.1

202 ± 20

TB13

21.3 ± 0.4

2.2 ± 0.3

65.7 ± 4.1

342 ± 29

TB14

17.4 ± 1.0

5.3 ± 0.5

45.5 ± 4.8

707 ± 16

TB15

21.4 ± 0.9

3.9 ± 0.4

53.6 ± 5.1

658 ± 33

TB16

18.9 ± 1.0

2.7 ± 0.2

80.5 ± 4.3

351 ± 39

TB17

15.5 ± 0.6

2.1 ± 0.3

50.1 ± 4.6

348 ± 24

TB19

16.0 ± 0.8

2.4 ± 0.5

52.1 ± 6.7

464 ± 21

TB22

27.1 ± 1.3

2.4 ± 0.5

46.3 ± 6.3

408 ± 32

TB24

14.9 ± 0.3

2.3 ± 0.1

46.4 ± 3.4

381 ± 15

TB27

16.2 ± 1.1

2.0 ± 0.6

51.1 ± 7.2

548 ± 17

  1. All experiments were performed at least three times.