Table 1 Affinity constant (pKi ± SEM) of ρ-Da1a evolutionary pathway toxins for adrenoceptors α1A, α1B, α1D and α2C.

From: Ancestral protein resurrection and engineering opportunities of the mamba aminergic toxins

Receptor subtype Toxins

α1A

α1B

α1D

α2C

AncTx1

9,62 ± 0,10

6,03 ± 0,02

6,58 ± 0,05

5,53 ± 0,06

AncTx2

8,79 ± 0,25

6,78 ± 0,05

7,14 ± 0,02

6,34 ± 0,01

AncTx3

8,78 ± 0,18

6,89 ± 0,08

7,27 ± 0,02

6,35 ± 0,04

AncTx4

9,24 ± 0,09

7,60 ± 0,02

6,39 ± 0,07

6,83 ± 0,17

ρ-Da1aa

9,19

7,28

5,95

6,85

MTβb

9,30

7,99

6,87

6,77

CM-3b

9,43

7,98

6,98

6,78

AncTx1 I38S

9,33 ± 0,01

4,75 ± 0,22

6,44 ± 0,01

4,90 ± 0,19

AncTx1 W28R-I38S

8,59 ± 0,09

6,41 ± 0,04

3,71 ± 0,11

4,85 ± 0,14

  1. a: [19], b: [32].