Details of experiments between the fragments Q9NSK0~549-558 and P62258~1-255
Note that the results of all experiments are listed, regardless of the modification states of the fragments.



Experiment series 1

Protein A protein: KLC4
Protein A fragment: 549-558
Protein A site: 14-3-3_pSer554
Protein A modification: (SEP)554
Protein A sequence: LQRSGSLGKI
Protein A construct: LQRSG(pSer)LGKI (crude synthetic peptide)

Protein B protein: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon

Average holdup BI: 0.21
Holdup BI standard deviation: 0.05
Immobilized partner concentration in holdup experiment (10-6M): 143
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 3.73
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: 3.27


Experiment series 2

Protein A protein: KLC4
Protein A fragment: 549-558
Protein A site: 14-3-3_pSer554
Protein A modification: (SEP)554
Protein A sequence: LQRSGSLGKI
Protein A construct: LQRSG(pSer)LGKI (crude synthetic peptide)

Protein B protein: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon

Average holdup BI: 0.15
Holdup BI standard deviation: 0.03
Immobilized partner concentration in holdup experiment (10-6M): 116
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 3.63
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.