Table 2 The affinities of antagonists and labelled probes described in this study

From: Characterisation of IL-23 receptor antagonists and disease relevant mutants using fluorescent probes

Probe

Assay

Constructs expressed

Ki or Kd

N

IL12p40

IL23-TMR Competition (Fig. 1)

NL-IL23R and IL12Rβ1

12.4 ± 1.4 nM

5

IL12p40

P630-TMR Competition (Fig. 5)

NL-IL23R and IL12Rβ1

Did not displace labelled probe

5

TEEEQQLY

IL23-TMR Competition (Fig. 1)

NL-IL23R and IL12Rβ1

Did not displace labelled probe

5

TEEEQQLY

P630-TMR Competition (Fig. 5)

NL-IL23R and IL12Rβ1

Did not displace labelled probe

3

P630

IL23-TMR Competition (Fig. 1)

NL-IL23R and IL12Rβ1

21.8 ± 3.4 nM

5

P630

P630-TMR Competition (Fig. 5)

NL-IL23R and IL12Rβ1

6.32 ± 1.06 nM

5

IL12p80

IL23-TMR Competition (Fig. 1)

NL-IL23R and IL12Rβ1

469 ± 210 pM

5

IL12p80

P630-TMR Competition (Fig. 5)

NL-IL23R and IL12Rβ1

Did not displace labelled probe

5

IL-23

IL23-TMR Competition (Fig. 1)

NL-IL23R and IL12Rβ1

31.6 ± 7.7 pM (Lay et al.24)

13

IL-23

P630-TMR Competition (Fig. 5)

NL-IL23R and IL12Rβ1

22.6 ± 5.2 pM

5

P630-TMR

Binding assay (Figs. 3 and 4)

NL-IL23R and IL12Rβ1

51.1 ± 7.3 nM

5

P630-TMR

Binding assay (Figs. 3 and 4)

NL-IL23R

101 ± 4 nM

5

P630-TMR

Binding assay (Figs. 3 and 4)

NL-IL12Rβ1 and IL23R

55.2 ± 10.5 nM

5

P630-TMR

Binding assay (Figs. 3 and 4)

NL-IL12Rβ1

Did not bind

3

P630-TMR

Binding assay (Figs. 3 and 4)

HiBit-IL23R and LgBit- IL12Rβ1

53.5 ± 4.4 nM

3

  1. Values are mean ± SEM obtained from N separate experiments.