Details of experiments between P63104 and Q9Y4H2
Note that the results of all experiments are listed, regardless of the modification states of the fragments.



Experiment series 1

Protein A protein: YWHAZ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3zeta

Protein B protein: IRS2
Protein B fragment: 574-583
Protein B site: 14-3-3_pThr579
Protein B modification: (TPO)579
Protein B sequence: RTYSLTTPAR
Protein B construct: RTYSL(pThr)TPAR (crude synthetic peptide)

Measured dissociation constant (10-6M): <1
Immobilized partner concentration in holdup experiment (10-6M): 132
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: 6


Experiment series 2

Protein A protein: YWHAZ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3zeta

Protein B protein: IRS2
Protein B fragment: 718-727
Protein B site: 14-3-3_pSer723
Protein B modification: (SEP)723
Protein B sequence: RTFPASGGGY
Protein B construct: RTFPA(pSer)GGGY (crude synthetic peptide)

Average holdup BI: 0.31
Holdup BI standard deviation: 0.02
Immobilized partner concentration in holdup experiment (10-6M): 132
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 6.84
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: 3.53


Experiment series 3

Protein A protein: YWHAZ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3zeta

Protein B protein: IRS2
Protein B fragment: 427-436
Protein B site: 14-3-3_pSer432
Protein B modification: (SEP)432
Protein B sequence: HSRSMSMPVA
Protein B construct: HSRSM(pSer)MPVA (crude synthetic peptide)

Average holdup BI: 0.88
Holdup BI standard deviation: 0.02
Immobilized partner concentration in holdup experiment (10-6M): 132
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 6.72
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: 4.72


Experiment series 4

Protein A protein: YWHAZ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3zeta

Protein B protein: IRS2
Protein B fragment: 379-388
Protein B site: 14-3-3_pSer384
Protein B modification: (SEP)384
Protein B sequence: GARPVSVAGS
Protein B construct: GARPV(pSer)VAGS (crude synthetic peptide)

Average holdup BI: 0.27
Holdup BI standard deviation: 0.03
Immobilized partner concentration in holdup experiment (10-6M): 132
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 5.98
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: 3.44


Experiment series 5

Protein A protein: YWHAZ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3zeta

Protein B protein: IRS2
Protein B fragment: 603-612
Protein B site: 14-3-3_pSer608
Protein B modification: (SEP)608
Protein B sequence: ATFSGSAGRL
Protein B construct: ATFSG(pSer)AGRL (crude synthetic peptide)

Average holdup BI: 0.17
Holdup BI standard deviation: 0.03
Immobilized partner concentration in holdup experiment (10-6M): 132
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 4.9
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 6

Protein A protein: YWHAZ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3zeta

Protein B protein: IRS2
Protein B fragment: 1171-1180
Protein B site: 14-3-3_pSer1176
Protein B modification: (SEP)1176
Protein B sequence: RHNSASVENV
Protein B construct: RHNSA(pSer)VENV (crude synthetic peptide)

Average holdup BI: 0.15
Holdup BI standard deviation: 0.06
Immobilized partner concentration in holdup experiment (10-6M): 132
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 2.33
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: YWHAZ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3zeta

Protein B protein: IRS2
Protein B fragment: 725-734
Protein B site: 14-3-3_pSer730
Protein B modification: (SEP)730
Protein B sequence: GGYKASSPAE
Protein B construct: GGYKA(pSer)SPAE (crude synthetic peptide)

Average holdup BI: -0.05
Holdup BI standard deviation: 0.12
Immobilized partner concentration in holdup experiment (10-6M): 132
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.42
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 8

Protein A protein: YWHAZ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3zeta

Protein B protein: IRS2
Protein B fragment: 518-527
Protein B site: 14-3-3_pSer523
Protein B modification: (SEP)523
Protein B sequence: SNTPESIAET
Protein B construct: SNTPE(pSer)IAET (crude synthetic peptide)

Average holdup BI: -0.06
Holdup BI standard deviation: 0.21
Immobilized partner concentration in holdup experiment (10-6M): 132
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.31
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: YWHAZ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3zeta

Protein B protein: IRS2
Protein B fragment: 341-350
Protein B site: 14-3-3_pSer346
Protein B modification: (SEP)346
Protein B sequence: RSRTDSLAAT
Protein B construct: RSRTD(pSer)LAAT (crude synthetic peptide)

Average holdup BI: 0.02
Holdup BI standard deviation: 0.08
Immobilized partner concentration in holdup experiment (10-6M): 132
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.23
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: YWHAZ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3zeta

Protein B protein: IRS2
Protein B fragment: 1159-1168
Protein B site: 14-3-3_pSer1164
Protein B modification: (SEP)1164
Protein B sequence: TPVSPSFAHN
Protein B construct: TPVSP(pSer)FAHN (crude synthetic peptide)

Average holdup BI: 0.01
Holdup BI standard deviation: 0.06
Immobilized partner concentration in holdup experiment (10-6M): 132
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.16
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 11

Protein A protein: YWHAZ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3zeta

Protein B protein: IRS2
Protein B fragment: 1278-1287
Protein B site: 14-3-3_pSer1283
Protein B modification: (SEP)1283
Protein B sequence: PGDKSSWGRT
Protein B construct: PGDKS(pSer)WGRT (crude synthetic peptide)

Average holdup BI: 0
Holdup BI standard deviation: 0.09
Immobilized partner concentration in holdup experiment (10-6M): 132
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.04
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: YWHAZ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3zeta

Protein B protein: IRS2
Protein B fragment: 574-583
Protein B site: 14-3-3_pThr579
Protein B modification: (TPO)579
Protein B sequence: RTYSLTTPAR
Protein B construct: biotin-ttds-RTYSL(pThr)TPAR (HPLC-purified synthetic peptide)

Measured dissociation constant (10-6M): 6.3
Standard deviation of dissociation constant (10-6M): 0.4
Experiment method: competitive Fluorescence Polarization
Details of affinity fitting: Competitive binding equation in ProFit

Date of measurement: 2022.01.19
Number of measurements: 3
Measured pKd: 5.2


Experiment series 13

Protein A protein: YWHAZ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3zeta

Protein B protein: IRS2
Protein B fragment: 574-583
Protein B site: 14-3-3_pThr579
Protein B modification: (TPO)579
Protein B sequence: RTYSLTTPAR
Protein B construct: biotin-ttds-RTYSL(pThr)TPAR (HPLC-purified synthetic peptide)

Measured dissociation constant (10-6M): 4.6
Standard deviation of dissociation constant (10-6M): 0.5
Experiment method: competitive Fluorescence Polarization
Details of affinity fitting: Competitive binding equation in ProFit

Date of measurement: 2022.02.10
Number of measurements: 3
Measured pKd: 5.33