Details of experiments between Q9UJ41 and Q04917
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: YWHAH
Protein B fragment: 1-246
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3eta

Average holdup BI: 0.75
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): 6.6
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: 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: YWHAH
Protein B fragment: 1-246
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3eta

Average holdup BI: -0.05
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): 0.75
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: YWHAH
Protein B fragment: 1-246
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3eta

Average holdup BI: 0.06
Holdup BI standard deviation: 0.1
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): 0.67
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: 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: YWHAH
Protein B fragment: 1-246
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3eta

Average holdup BI: 0.01
Holdup BI standard deviation: 0.12
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): 0.1
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: YWHAH
Protein B fragment: 1-246
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3eta

Average holdup BI: 0.07
Holdup BI standard deviation: 0.56
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): 0.09
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.