Details of experiments between O95208 and P27348
Note that the results of all experiments are listed, regardless of the modification states of the fragments.



Experiment series 1

Protein A protein: EPN2
Protein A fragment: 190-199
Protein A site: 14-3-3_pSer195
Protein A modification: (SEP)195
Protein A sequence: GGSPASYHGS
Protein A construct: GGSPA(pSer)YHGS (crude synthetic peptide)

Protein B protein: YWHAQ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3tau

Average holdup BI: 0.59
Holdup BI standard deviation: 0.02
Immobilized partner concentration in holdup experiment (10-6M): 130
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 9.08
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: 4.05


Experiment series 2

Protein A protein: EPN2
Protein A fragment: 168-177
Protein A site: 14-3-3_pSer173
Protein A modification: (SEP)173
Protein A sequence: FGRGSSQPNL
Protein A construct: FGRGS(pSer)QPNL (crude synthetic peptide)

Protein B protein: YWHAQ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3tau

Average holdup BI: 0.56
Holdup BI standard deviation: 0.03
Immobilized partner concentration in holdup experiment (10-6M): 130
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 7.15
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: 3.99


Experiment series 3

Protein A protein: EPN2
Protein A fragment: 403-412
Protein A site: 14-3-3_pSer408
Protein A modification: (SEP)408
Protein A sequence: SVPKNSDPWA
Protein A construct: SVPKN(pSer)DPWA (crude synthetic peptide)

Protein B protein: YWHAQ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3tau

Average holdup BI: 0.03
Holdup BI standard deviation: 0.08
Immobilized partner concentration in holdup experiment (10-6M): 130
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.39
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 4

Protein A protein: EPN2
Protein A fragment: 322-331
Protein A site: 14-3-3_pSer327
Protein A modification: (SEP)327
Protein A sequence: KKEHGSLPQQ
Protein A construct: KKEHG(pSer)LPQQ (crude synthetic peptide)

Protein B protein: YWHAQ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3tau

Average holdup BI: 0.13
Holdup BI standard deviation: 0.43
Immobilized partner concentration in holdup experiment (10-6M): 130
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.24
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 5

Protein A protein: EPN2
Protein A fragment: 311-320
Protein A site: 14-3-3_pThr316
Protein A modification: (TPO)316
Protein A sequence: ESRRDTVKIP
Protein A construct: ESRRD(pThr)VKIP (crude synthetic peptide)

Protein B protein: YWHAQ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3tau

Average holdup BI: -0.05
Holdup BI standard deviation: 0.21
Immobilized partner concentration in holdup experiment (10-6M): 130
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.17
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.