Details of experiments between the fragments O60292~1130-1139 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: SIPA1L3
Protein A fragment: 1130-1139
Protein A site: 14-3-3_pSer1135
Protein A modification: (SEP)1135
Protein A sequence: SKRPVSFPET
Protein A construct: SKRPV(pSer)FPET (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: 0.75
Holdup BI standard deviation: 0.01
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): 8.91
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: 4.36


Experiment series 2

Protein A protein: SIPA1L3
Protein A fragment: 1130-1139
Protein A site: 14-3-3_pSer1135
Protein A modification: (SEP)1135
Protein A sequence: SKRPVSFPET
Protein A construct: SKRPV(pSer)FPET (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: 0.68
Holdup BI standard deviation: 0.01
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): 8.88
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: 4.28


Experiment series 3

Protein A protein: SIPA1L3
Protein A fragment: 1130-1139
Protein A site: 14-3-3_pSer1135
Protein A modification: (SEP)1135
Protein A sequence: SKRPVSFPET
Protein A construct: SKRPV(pSer)FPET (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: 0.73
Holdup BI standard deviation: 0.01
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): 8.17
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: 4.3