Details of experiments between Q5TCZ1 and P31946
Note that the results of all experiments are listed, regardless of the modification states of the fragments.



Experiment series 1

Protein A protein: SH3PXD2A
Protein A fragment: 251-260
Protein A site: 14-3-3_pThr256
Protein A modification: (TPO)256
Protein A sequence: LDRRWTLGGM
Protein A construct: LDRRW(pThr)LGGM (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

Measured dissociation constant (10-6M): <10
Immobilized partner concentration in holdup experiment (10-6M): 102
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: 1
Measured pKd: 5


Experiment series 2

Protein A protein: SH3PXD2A
Protein A fragment: 415-424
Protein A site: 14-3-3_pSer420
Protein A modification: (SEP)420
Protein A sequence: QRAQISSPNL
Protein A construct: QRAQI(pSer)SPNL (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: 0.65
Holdup BI standard deviation: 0.02
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): 7.61
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: 4.15


Experiment series 3

Protein A protein: SH3PXD2A
Protein A fragment: 415-424
Protein A site: 14-3-3_pSer420
Protein A modification: (SEP)420
Protein A sequence: QRAQISSPNL
Protein A construct: QRAQI(pSer)SPNL (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: 0.66
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): 7.48
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: 4.28


Experiment series 4

Protein A protein: SH3PXD2A
Protein A fragment: 374-383
Protein A site: 14-3-3_pSer379
Protein A modification: (SEP)379
Protein A sequence: AKKEISLPIL
Protein A construct: AKKEI(pSer)LPIL (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: 0.81
Holdup BI standard deviation: 0.06
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): 5.15
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: 4.52


Experiment series 5

Protein A protein: SH3PXD2A
Protein A fragment: 374-383
Protein A site: 14-3-3_pSer379
Protein A modification: (SEP)379
Protein A sequence: AKKEISLPIL
Protein A construct: AKKEI(pSer)LPIL (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: 0.78
Holdup BI standard deviation: 0.05
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): 4.78
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: 4.54


Experiment series 6

Protein A protein: SH3PXD2A
Protein A fragment: 1047-1056
Protein A site: 14-3-3_pSer1052
Protein A modification: (SEP)1052
Protein A sequence: PAQRNSIPVS
Protein A construct: PAQRN(pSer)IPVS (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: 0.06
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): 3.72
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
The affinity was below the detection threshold of the assay.


Experiment series 7

Protein A protein: SH3PXD2A
Protein A fragment: 997-1006
Protein A site: 14-3-3_pSer1002
Protein A modification: (SEP)1002
Protein A sequence: LRRNESLTAT
Protein A construct: LRRNE(pSer)LTAT (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: -0.13
Holdup BI standard deviation: 0.08
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): 1.98
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
The affinity was below the detection threshold of the assay.


Experiment series 8

Protein A protein: SH3PXD2A
Protein A fragment: 1047-1056
Protein A site: 14-3-3_pSer1052
Protein A modification: (SEP)1052
Protein A sequence: PAQRNSIPVS
Protein A construct: PAQRN(pSer)IPVS (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: 0.05
Holdup BI standard deviation: 0.03
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): 1.65
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 9

Protein A protein: SH3PXD2A
Protein A fragment: 1012-1021
Protein A site: 14-3-3_pSer1017
Protein A modification: (SEP)1017
Protein A sequence: VRRNSSFSTA
Protein A construct: VRRNS(pSer)FSTA (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: 0.22
Holdup BI standard deviation: 0.15
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): 1.29
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
The affinity was below the detection threshold of the assay.


Experiment series 10

Protein A protein: SH3PXD2A
Protein A fragment: 513-522
Protein A site: 14-3-3_pThr518
Protein A modification: (TPO)518
Protein A sequence: RTSTLTRPKV
Protein A construct: RTSTL(pThr)RPKV (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: 0.12
Holdup BI standard deviation: 0.1
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): 1.27
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
The affinity was below the detection threshold of the assay.


Experiment series 11

Protein A protein: SH3PXD2A
Protein A fragment: 513-522
Protein A site: 14-3-3_pThr518
Protein A modification: (TPO)518
Protein A sequence: RTSTLTRPKV
Protein A construct: RTSTL(pThr)RPKV (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: 0.06
Holdup BI standard deviation: 0.06
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): 1.15
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
The affinity was below the detection threshold of the assay.


Experiment series 12

Protein A protein: SH3PXD2A
Protein A fragment: 562-571
Protein A site: 14-3-3_pSer567
Protein A modification: (SEP)567
Protein A sequence: AFGFDSEPEL
Protein A construct: AFGFD(pSer)EPEL (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: -0.19
Holdup BI standard deviation: 0.33
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): 0.61
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 13

Protein A protein: SH3PXD2A
Protein A fragment: 633-642
Protein A site: 14-3-3_pSer638
Protein A modification: (SEP)638
Protein A sequence: LSARGSSGDS
Protein A construct: LSARG(pSer)SGDS (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: 0.07
Holdup BI standard deviation: 0.32
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): 0.15
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
The affinity was below the detection threshold of the assay.


Experiment series 14

Protein A protein: SH3PXD2A
Protein A fragment: 997-1006
Protein A site: 14-3-3_pSer1002
Protein A modification: (SEP)1002
Protein A sequence: LRRNESLTAT
Protein A construct: LRRNE(pSer)LTAT (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: -0.01
Holdup BI standard deviation: 0.11
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): 0.05
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 15

Protein A protein: SH3PXD2A
Protein A fragment: 562-571
Protein A site: 14-3-3_pSer567
Protein A modification: (SEP)567
Protein A sequence: AFGFDSEPEL
Protein A construct: AFGFD(pSer)EPEL (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
Holdup BI standard deviation: 0.39
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): 0.01
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
The affinity was below the detection threshold of the assay.