Table 2 Affinity measurements for GHR_pY595 and EpoR_pY426 wild-type and mutant peptides binding to SBC

From: Structural insights into substrate recognition by the SOCS2 E3 ubiquitin ligase

Sequence

Peptide

SPR KD (μM)

NMR Ki (μM)

PVPDpYTSIHIV

GHR wild-type

1.5 ± 0.09

1.5 ± 0.06

PRPDpYTSIHIV

V(−3)R

9.0 ± 1.05

20.6 ± 2.09

PYPDpYTSIHIV

V(−3)Y

3.3 ± 0.13

3.3 ± 0.24

AVPDpYTSIHIV

pY(−4)

1.7 ± 0.14

0.9 ± 0.17

PAPDpYTSIHIV

pY(−3)

2.7 ± 0.19

3.4 ± 0.25

PVADpYTSIHIV

pY(−2)

1.4 ± 0.12

4.1 ± 0.75

PVPApYTSIHIV

pY(−1)

6.2 ± 0.37

21.7 ± 3.34

PVPDpYASIHIV

pY(+1)

1.0 ± 0.09

0.5 ± 0.07

PVPDpYTAIHIV

pY(+2)

1.4 ± 0.07

1.2 ± 0.06

PVPDpYTSAHIV

pY(+3)

3.7 ± 0.22

3.4 ± 0.66

PVPDpYTSIAIV

pY(+4)

6.7 ± 0.78

18.5 ± 2.67

PVPDpYTSIHAV

pY(+5)

2.4 ± 0.13

1.4 ± 0.36

PVPDpYTSIHIA

pY(+6)

1.9 ± 0.09

1.6 ± 0.21

ASFEpYTILDPS

EpoR wild-type

13.3 ± 0.59

7.1 ± 1.01

AAFEpYTILDPS

pY(−3)

14.2 ± 0.65

7.5 ± 1.04

ASAEpYTILDPS

pY(−2)

16.3 ± 1.02

7.2 ± 0.42

ASFApYTILDPS

pY(−1)

21.7 ± 1.49

23.5 ± 2.99

ASFEpYAILDPS

pY(+1)

17.1 ± 0.38

10.3 ± 1.28

ASFEpYTALDPS

pY(+2)

30.8 ± 1.24

17.2 ± 0.89

ASFEpYTIADPS

pY(+3)

32.3 ± 1.42

20.4 ± 0.88

ASFEpYTILAPS

pY(+4)

18.0 ± 0.91

14.1 ± 1.74

ASFEpYTILDAS

pY(+5)

8.9 ± 1.25

6.9 ± 1.39

ASFEpYTILDPA

pY(+6)

16.4 ± 0.29

11.3 ± 1.29

  1. Values reported are the means ± s.e.m. from four independent experiments