Details of experiments between the fragments P30305~146-155 and P31946~1-246
Note that the results of all experiments are listed, regardless of the modification states of the fragments.



Experiment series 1

Protein A protein: CDC25B
Protein A fragment: 146-155
Protein A site: 14-3-3_pSer151
Protein A modification: (SEP)151
Protein A sequence: IRRFQSMPDG
Protein A construct: IRRFQ(pSer)MPDG (crude synthetic peptide)

Protein B protein: YWHAB
Protein B fragment: 1-246
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3beta

Average holdup BI: 0.88
Holdup BI standard deviation: 0.02
Immobilized partner concentration in holdup experiment (10-6M): 102
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 8.55
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: 4.84


Experiment series 2

Protein A protein: CDC25B
Protein A fragment: 146-155
Protein A site: 14-3-3_pSer151
Protein A modification: (SEP)151
Protein A sequence: IRRFQSMPVR
Protein A construct: IRRFQ(pSer)MPVR (crude synthetic peptide)

Protein B protein: YWHAB
Protein B fragment: 1-246
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3beta

Average holdup BI: 0.9
Holdup BI standard deviation: 0.01
Immobilized partner concentration in holdup experiment (10-6M): 102
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 8.21
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: 4.96


Experiment series 3

Protein A protein: CDC25B
Protein A fragment: 146-155
Protein A site: 14-3-3_pSer151
Protein A modification: (SEP)151
Protein A sequence: IRRFQSMPDG
Protein A construct: IRRFQ(pSer)MPDG (crude synthetic peptide)

Protein B protein: YWHAB
Protein B fragment: 1-246
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3beta

Average holdup BI: 0.93
Holdup BI standard deviation: 0.05
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): 5.8
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: 4.97


Experiment series 4

Protein A protein: CDC25B
Protein A fragment: 146-155
Protein A site: 14-3-3_pSer151
Protein A modification: (SEP)151
Protein A sequence: IRRFQSMPVR
Protein A construct: IRRFQ(pSer)MPVR (crude synthetic peptide)

Protein B protein: YWHAB
Protein B fragment: 1-246
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3beta

Average holdup BI: 0.79
Holdup BI standard deviation: 0.07
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): 4.62
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: 4.45