Details of experiments between Q5TCZ1 and P62258
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: 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: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon

Average holdup BI: 0.42
Holdup BI standard deviation: 0.05
Immobilized partner concentration in holdup experiment (10-6M): 143
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 5.66
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: 3.7


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: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon

Average holdup BI: 0.36
Holdup BI standard deviation: 0.04
Immobilized partner concentration in holdup experiment (10-6M): 116
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 5.5
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: 3.68


Experiment series 3

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: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon

Average holdup BI: 0.5
Holdup BI standard deviation: 0.09
Immobilized partner concentration in holdup experiment (10-6M): 143
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 3.56
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: 3.85


Experiment series 4

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: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon

Average holdup BI: 0.87
Holdup BI standard deviation: 0.08
Immobilized partner concentration in holdup experiment (10-6M): 143
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 3.11
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: 4.68


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: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon

Average holdup BI: 0.35
Holdup BI standard deviation: 0.12
Immobilized partner concentration in holdup experiment (10-6M): 116
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 2.59
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: 3.66


Experiment series 6

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: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon

Average holdup BI: -0.11
Holdup BI standard deviation: 0.07
Immobilized partner concentration in holdup experiment (10-6M): 116
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 1.91
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: 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: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon

Average holdup BI: 0.04
Holdup BI standard deviation: 0.03
Immobilized partner concentration in holdup experiment (10-6M): 116
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 1.37
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: 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: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon

Average holdup BI: 0.13
Holdup BI standard deviation: 0.17
Immobilized partner concentration in holdup experiment (10-6M): 116
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.64
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 9

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: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon

Average holdup BI: 0.05
Holdup BI standard deviation: 0.09
Immobilized partner concentration in holdup experiment (10-6M): 143
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 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: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon

Average holdup BI: -0.02
Holdup BI standard deviation: 0.04
Immobilized partner concentration in holdup experiment (10-6M): 116
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.45
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: 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: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon

Average holdup BI: 0.13
Holdup BI standard deviation: 0.27
Immobilized partner concentration in holdup experiment (10-6M): 143
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.43
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: 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: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon

Average holdup BI: 0.02
Holdup BI standard deviation: 0.06
Immobilized partner concentration in holdup experiment (10-6M): 143
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.22
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: 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: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon

Average holdup BI: 0
Holdup BI standard deviation: 0.11
Immobilized partner concentration in holdup experiment (10-6M): 143
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.03
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.