Details of experiments between P31946 and Q7Z401
Note that the results of all experiments are listed, regardless of the modification states of the fragments.



Experiment series 1

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

Protein B protein: DENND4A
Protein B fragment: 1276-1285
Protein B site: 14-3-3_pSer1281
Protein B modification: (SEP)1281
Protein B sequence: RDRLWSSPAF
Protein B construct: RDRLW(pSer)SPAF (crude synthetic peptide)

Measured dissociation constant (10-6M): <100
Immobilized partner concentration in holdup experiment (10-6M): 134
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: 1
Measured pKd: 4


Experiment series 2

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

Protein B protein: DENND4A
Protein B fragment: 1503-1512
Protein B site: 14-3-3_pSer1508
Protein B modification: (SEP)1508
Protein B sequence: RYFLKSSPST
Protein B construct: RYFLK(pSer)SPST (crude synthetic peptide)

Average holdup BI: 0.75
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): 7.55
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: 4.47


Experiment series 3

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

Protein B protein: DENND4A
Protein B fragment: 1585-1594
Protein B site: 14-3-3_pThr1590
Protein B modification: (TPO)1590
Protein B sequence: ARSISTSGPL
Protein B construct: ARSIS(pThr)SGPL (crude synthetic peptide)

Average holdup BI: 0.46
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): 7.46
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: 3.81


Experiment series 4

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

Protein B protein: DENND4A
Protein B fragment: 1503-1512
Protein B site: 14-3-3_pSer1508
Protein B modification: (SEP)1508
Protein B sequence: RYFLKSSPST
Protein B construct: RYFLK(pSer)SPST (crude synthetic peptide)

Average holdup BI: 0.77
Holdup BI standard deviation: 0.03
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): 6.63
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: 4.39


Experiment series 5

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

Protein B protein: DENND4A
Protein B fragment: 1585-1594
Protein B site: 14-3-3_pThr1590
Protein B modification: (TPO)1590
Protein B sequence: ARSISTSGPL
Protein B construct: ARSIS(pThr)SGPL (crude synthetic peptide)

Average holdup BI: 0.5
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): 6.49
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: 3.98


Experiment series 6

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

Protein B protein: DENND4A
Protein B fragment: 1586-1595
Protein B site: 14-3-3_pSer1591
Protein B modification: (SEP)1591
Protein B sequence: RSISTSGPLD
Protein B construct: RSIST(pSer)GPLD (crude synthetic peptide)

Average holdup BI: 0.18
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): 5.44
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: YWHAB
Protein A fragment: 1-246
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3beta

Protein B protein: DENND4A
Protein B fragment: 1030-1039
Protein B site: 14-3-3_pSer1035
Protein B modification: (SEP)1035
Protein B sequence: RNRNLSGGVL
Protein B construct: RNRNL(pSer)GGVL (crude synthetic peptide)

Average holdup BI: 0.3
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): 4.59
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: 3.62


Experiment series 8

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

Protein B protein: DENND4A
Protein B fragment: 1586-1595
Protein B site: 14-3-3_pSer1591
Protein B modification: (SEP)1591
Protein B sequence: RSISTSGPLD
Protein B construct: RSIST(pSer)GPLD (crude synthetic peptide)

Average holdup BI: 0.24
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): 4
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: 3.48


Experiment series 9

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

Protein B protein: DENND4A
Protein B fragment: 1276-1285
Protein B site: 14-3-3_pSer1281
Protein B modification: (SEP)1281
Protein B sequence: RDRLWSSPAF
Protein B construct: RDRLW(pSer)SPAF (crude synthetic peptide)

Average holdup BI: 0.94
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): 3.89
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: 5.22


Experiment series 10

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

Protein B protein: DENND4A
Protein B fragment: 1030-1039
Protein B site: 14-3-3_pSer1035
Protein B modification: (SEP)1035
Protein B sequence: RNRNLSGGVL
Protein B construct: RNRNL(pSer)GGVL (crude synthetic peptide)

Average holdup BI: 0.36
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): 3.44
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: 3.62


Experiment series 11

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

Protein B protein: DENND4A
Protein B fragment: 1146-1155
Protein B site: 14-3-3_pSer1151
Protein B modification: (SEP)1151
Protein B sequence: IQRMNSSFSV
Protein B construct: IQRMN(pSer)SFSV (crude synthetic peptide)

Average holdup BI: 0.38
Holdup BI standard deviation: 0.09
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): 3.21
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 12

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

Protein B protein: DENND4A
Protein B fragment: 1146-1155
Protein B site: 14-3-3_pSer1151
Protein B modification: (SEP)1151
Protein B sequence: IQRMNSSFSV
Protein B construct: IQRMN(pSer)SFSV (crude synthetic peptide)

Average holdup BI: 0.17
Holdup BI standard deviation: 0.1
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): 1.83
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: YWHAB
Protein A fragment: 1-246
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3beta

Protein B protein: DENND4A
Protein B fragment: 1220-1229
Protein B site: 14-3-3_pSer1225
Protein B modification: (SEP)1225
Protein B sequence: TSRTPSIDLQ
Protein B construct: TSRTP(pSer)IDLQ (crude synthetic peptide)

Average holdup BI: 0.03
Holdup BI standard deviation: 0.04
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): 0.95
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: YWHAB
Protein A fragment: 1-246
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3beta

Protein B protein: DENND4A
Protein B fragment: 1220-1229
Protein B site: 14-3-3_pSer1225
Protein B modification: (SEP)1225
Protein B sequence: TSRTPSIDLQ
Protein B construct: TSRTP(pSer)IDLQ (crude synthetic peptide)

Average holdup BI: 0.01
Holdup BI standard deviation: 0.07
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): 0.12
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.