Details of experiments between the fragments Q8IVT5~401-410 and P31946~1-246
Note that the results of all experiments are listed, regardless of the modification states of the fragments.



Experiment series 1

Protein A protein: KSR1
Protein A fragment: 401-410
Protein A site: 14-3-3_pSer406
Protein A modification: (SEP)406
Protein A sequence: LRRTESVPSD
Protein A construct: LRRTE(pSer)VPSD (crude synthetic peptide)

Protein B protein: YWHAB
Protein B fragment: 1-246
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3beta

Average holdup BI: 0.48
Holdup BI standard deviation: 0.03
Immobilized partner concentration in holdup experiment (10-6M): 102
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 7.46
Experiment method: HU Multiplex
Details of affinity fitting: hyperbolic binding equation
Date of measurement: 2021.10.13.
Experimental details: -log10(P Two-sided unpaired T-test (4 vs 5))
Number of measurements: 5
Measured pKd: 3.97


Experiment series 2

Protein A protein: KSR1
Protein A fragment: 401-410
Protein A site: 14-3-3_pSer406
Protein A modification: (SEP)406
Protein A sequence: LRRTESVPSD
Protein A construct: LRRTE(pSer)VPSD (crude synthetic peptide)

Protein B protein: YWHAB
Protein B fragment: 1-246
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3beta

Average holdup BI: 0.49
Holdup BI standard deviation: 0.03
Immobilized partner concentration in holdup experiment (10-6M): 134
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 5.72
Experiment method: HU Multiplex
Details of affinity fitting: hyperbolic binding equation
Date of measurement: 2022.02.17.
Experimental details: -log10(P Two-sided unpaired T-test (4 vs 4))
Number of measurements: 4
Measured pKd: 3.85