Details of experiments between the fragments Q15276~372-381 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: RABEP1
Protein A fragment: 372-381
Protein A site: 14-3-3_pSer377
Protein A modification: (SEP)377
Protein A sequence: RGSVHSLDAG
Protein A construct: RGSVH(pSer)LDAG (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: 0.46
Holdup BI standard deviation: 0.06
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): 5.82
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: 3.82


Experiment series 2

Protein A protein: RABEP1
Protein A fragment: 372-381
Protein A site: 14-3-3_pSer377
Protein A modification: (SEP)377
Protein A sequence: RGSVHSLDAG
Protein A construct: RGSVH(pSer)LDAG (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: 0.41
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): 5.24
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: 3.71


Experiment series 3

Protein A protein: RABEP1
Protein A fragment: 372-381
Protein A site: 14-3-3_pSer377
Protein A modification: (SEP)377
Protein A sequence: RGSVHSLDAG
Protein A construct: RGSVH(pSer)LDAG (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: 0.44
Holdup BI standard deviation: 0.09
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): 3.03
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: 3.86