Details of experiments between Q7Z401 and P27348
Note that the results of all experiments are listed, regardless of the modification states of the fragments.



Experiment series 1

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

Protein B protein: YWHAQ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3tau

Average holdup BI: 0.68
Holdup BI standard deviation: 0.03
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): 7.03
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
Measured pKd: 4.21


Experiment series 2

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

Protein B protein: YWHAQ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3tau

Average holdup BI: 0.42
Holdup BI standard deviation: 0.03
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): 6.66
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: 3.74


Experiment series 3

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

Protein B protein: YWHAQ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3tau

Average holdup BI: 0.16
Holdup BI standard deviation: 0.03
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): 4.71
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: DENND4A
Protein A fragment: 1276-1285
Protein A site: 14-3-3_pSer1281
Protein A modification: (SEP)1281
Protein A sequence: RDRLWSSPAF
Protein A construct: RDRLW(pSer)SPAF (crude synthetic peptide)

Protein B protein: YWHAQ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3tau

Average holdup BI: 0.88
Holdup BI standard deviation: 0.04
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): 3.67
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
Measured pKd: 4.76


Experiment series 5

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

Protein B protein: YWHAQ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3tau

Average holdup BI: 0.24
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): 3.48
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: 3.4


Experiment series 6

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

Protein B protein: YWHAQ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3tau

Average holdup BI: 0.08
Holdup BI standard deviation: 0.08
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): 1.03
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.


Experiment series 7

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

Protein B protein: YWHAQ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3tau

Average holdup BI: -0.01
Holdup BI standard deviation: 0.06
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): 0.11
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
The affinity was below the detection threshold of the assay.