Details of experiments between the fragments Q8IVT5~326-335 and P61981~1-247
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: 326-335
Protein A site: 14-3-3_pSer331
Protein A modification: (SEP)331
Protein A sequence: MRFDLSHGSP
Protein A construct: MRFDL(pSer)HGSP (crude synthetic peptide)

Protein B protein: YWHAG
Protein B fragment: 1-247
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3gamma

Average holdup BI: -0.09
Holdup BI standard deviation: 0.25
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): 0.32
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
The affinity was below the detection threshold of the assay.


Experiment series 2

Protein A protein: KSR1
Protein A fragment: 326-335
Protein A site: 14-3-3_pSer331
Protein A modification: (SEP)331
Protein A sequence: MRFDLSHGSP
Protein A construct: MRFDL(pSer)HGSP (crude synthetic peptide)

Protein B protein: YWHAG
Protein B fragment: 1-247
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3gamma

Average holdup BI: -0.03
Holdup BI standard deviation: 0.16
Immobilized partner concentration in holdup experiment (10-6M): 129
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.19
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
The affinity was below the detection threshold of the assay.


Experiment series 3

Protein A protein: KSR1
Protein A fragment: 326-335
Protein A site: 14-3-3_pSer331
Protein A modification: (SEP)331
Protein A sequence: MRFDLSHGSP
Protein A construct: MRFDL(pSer)HGSP (crude synthetic peptide)

Protein B protein: YWHAG
Protein B fragment: 1-247
Protein B site: 14-3-3
Protein B modification: 100_uM_FCA
Protein B construct: avi-his6-MBP-TEVsite-14-3-3gamma

Average holdup BI: 0.04
Holdup BI standard deviation: 0.31
Immobilized partner concentration in holdup experiment (10-6M): 115
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.09
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
The affinity was below the detection threshold of the assay.