Details of experiments between Q9UJ41 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: RABGEF1
Protein A fragment: 101-110
Protein A site: 14-3-3_pSer106
Protein A modification: (SEP)106
Protein A sequence: VKKFFSASSR
Protein A construct: VKKFF(pSer)ASSR (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: 0.61
Holdup BI standard deviation: 0.04
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): 7.41
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: 4.08


Experiment series 2

Protein A protein: RABGEF1
Protein A fragment: 372-381
Protein A site: 14-3-3_pSer377
Protein A modification: (SEP)377
Protein A sequence: QSLNLSQEDF
Protein A construct: QSLNL(pSer)QEDF (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: -0.22
Holdup BI standard deviation: 0.07
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): 3.79
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: RABGEF1
Protein A fragment: 108-117
Protein A site: 14-3-3_pSer113
Protein A modification: (SEP)113
Protein A sequence: SSRVGSKKEI
Protein A construct: SSRVG(pSer)KKEI (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: -0.07
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): 1.14
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: RABGEF1
Protein A fragment: 127-136
Protein A site: 14-3-3_pSer132
Protein A modification: (SEP)132
Protein A sequence: INRQTSIETD
Protein A construct: INRQT(pSer)IETD (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: 0.05
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): 0.74
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: RABGEF1
Protein A fragment: 384-393
Protein A site: 14-3-3_pThr389
Protein A modification: (TPO)389
Protein A sequence: YMSGQTSPRK
Protein A construct: YMSGQ(pThr)SPRK (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
Holdup BI standard deviation: 0.63
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): 0.01
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.