Details of experiments between P63104 and Q12802
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: AKAP13
Protein B fragment: 1597-1606
Protein B site: 14-3-3_pSer1602
Protein B modification: (SEP)1602
Protein B sequence: HRRSFSLEGL
Protein B construct: HRRSF(pSer)LEGL (crude synthetic peptide)

Measured dissociation constant (10-6M): <100
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: 4


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: AKAP13
Protein B fragment: 2462-2471
Protein B site: 14-3-3_pThr2467
Protein B modification: (TPO)2467
Protein B sequence: PRRAETFGGF
Protein B construct: PRRAE(pThr)FGGF (crude synthetic peptide)

Average holdup BI: 0.97
Holdup BI standard deviation: 0
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): 7.38
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: 5.33


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: AKAP13
Protein B fragment: 1924-1933
Protein B site: 14-3-3_pSer1929
Protein B modification: (SEP)1929
Protein B sequence: KFLSHSTDSL
Protein B construct: KFLSH(pSer)TDSL (crude synthetic peptide)

Average holdup BI: 0.52
Holdup BI standard deviation: 0.04
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): 5.76
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: 3.91


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: AKAP13
Protein B fragment: 2493-2502
Protein B site: 14-3-3_pSer2498
Protein B modification: (SEP)2498
Protein B sequence: LRRTESDSGL
Protein B construct: LRRTE(pSer)DSGL (crude synthetic peptide)

Average holdup BI: 0.38
Holdup BI standard deviation: 0.04
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): 5.37
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: 3.66


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: AKAP13
Protein B fragment: 2406-2415
Protein B site: 14-3-3_pThr2411
Protein B modification: (TPO)2411
Protein B sequence: LFRSNTEEAL
Protein B construct: LFRSN(pThr)EEAL (crude synthetic peptide)

Average holdup BI: 0.17
Holdup BI standard deviation: 0.04
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): 4.35
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: AKAP13
Protein B fragment: 1871-1880
Protein B site: 14-3-3_pSer1876
Protein B modification: (SEP)1876
Protein B sequence: KERPRSAVLL
Protein B construct: KERPR(pSer)AVLL (crude synthetic peptide)

Average holdup BI: 0.62
Holdup BI standard deviation: 0.11
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): 4.25
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: 4.08


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: AKAP13
Protein B fragment: 1745-1754
Protein B site: 14-3-3_pSer1750
Protein B modification: (SEP)1750
Protein B sequence: VSRTFSYIKN
Protein B construct: VSRTF(pSer)YIKN (crude synthetic peptide)

Average holdup BI: 0.18
Holdup BI standard deviation: 0.04
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): 3.97
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: AKAP13
Protein B fragment: 1502-1511
Protein B site: 14-3-3_pSer1507
Protein B modification: (SEP)1507
Protein B sequence: SRDRQSLDGF
Protein B construct: SRDRQ(pSer)LDGF (crude synthetic peptide)

Average holdup BI: 0.21
Holdup BI standard deviation: 0.05
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): 3.88
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: AKAP13
Protein B fragment: 2562-2571
Protein B site: 14-3-3_pSer2567
Protein B modification: (SEP)2567
Protein B sequence: LSRPSSLIEQ
Protein B construct: LSRPS(pSer)LIEQ (crude synthetic peptide)

Average holdup BI: 0.17
Holdup BI standard deviation: 0.05
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): 3.28
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: AKAP13
Protein B fragment: 1221-1230
Protein B site: 14-3-3_pSer1226
Protein B modification: (SEP)1226
Protein B sequence: SGRERSTPSL
Protein B construct: SGRER(pSer)TPSL (crude synthetic peptide)

Average holdup BI: 0.11
Holdup BI standard deviation: 0.07
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): 1.88
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: AKAP13
Protein B fragment: 1927-1936
Protein B site: 14-3-3_pSer1932
Protein B modification: (SEP)1932
Protein B sequence: SHSTDSLNKI
Protein B construct: SHSTD(pSer)LNKI (crude synthetic peptide)

Average holdup BI: 0.09
Holdup BI standard deviation: 0.07
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): 1.53
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: AKAP13
Protein B fragment: 1637-1646
Protein B site: 14-3-3_pSer1642
Protein B modification: (SEP)1642
Protein B sequence: EERVDSLVSL
Protein B construct: EERVD(pSer)LVSL (crude synthetic peptide)

Average holdup BI: -0.14
Holdup BI standard deviation: 0.13
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): 1.41
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: 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: AKAP13
Protein B fragment: 2728-2737
Protein B site: 14-3-3_pSer2733
Protein B modification: (SEP)2733
Protein B sequence: SPKRNSISRT
Protein B construct: SPKRN(pSer)ISRT (crude synthetic peptide)

Average holdup BI: 0.19
Holdup BI standard deviation: 0.16
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): 1
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 14

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: AKAP13
Protein B fragment: 1890-1899
Protein B site: 14-3-3_pSer1895
Protein B modification: (SEP)1895
Protein B sequence: FANRRSQQSV
Protein B construct: FANRR(pSer)QQSV (crude synthetic peptide)

Average holdup BI: 0.08
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): 0.91
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: 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: AKAP13
Protein B fragment: 1640-1649
Protein B site: 14-3-3_pSer1645
Protein B modification: (SEP)1645
Protein B sequence: VDSLVSLSEE
Protein B construct: VDSLV(pSer)LSEE (crude synthetic peptide)

Average holdup BI: -0.16
Holdup BI standard deviation: 0.24
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): 0.85
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 16

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: AKAP13
Protein B fragment: 2558-2567
Protein B site: 14-3-3_pSer2563
Protein B modification: (SEP)2563
Protein B sequence: LTRSLSRPSS
Protein B construct: LTRSL(pSer)RPSS (crude synthetic peptide)

Average holdup BI: 0.2
Holdup BI standard deviation: 0.22
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): 0.82
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 17

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: AKAP13
Protein B fragment: 2468-2477
Protein B site: 14-3-3_pSer2473
Protein B modification: (SEP)2473
Protein B sequence: FGGFDSHQMN
Protein B construct: FGGFD(pSer)HQMN (crude synthetic peptide)

Average holdup BI: 0
Holdup BI standard deviation: 0.11
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): 0.02
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 18

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: AKAP13
Protein B fragment: 2406-2415
Protein B site: 14-3-3_pThr2411
Protein B modification: (TPO)2411
Protein B sequence: LFRSNTEEAL
Protein B construct: biotin-ttds-LFRSN(pThr)EEAL (HPLC-purified synthetic peptide)

Measured dissociation constant (10-6M): 1213
Standard deviation of dissociation constant (10-6M): 200
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: 2.92


Experiment series 19

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: AKAP13
Protein B fragment: 2406-2415
Protein B site: 14-3-3_pThr2411
Protein B modification: (TPO)2411
Protein B sequence: LFRSNTEEAL
Protein B construct: biotin-ttds-LFRSN(pThr)EEAL (HPLC-purified synthetic peptide)

Measured dissociation constant (10-6M): 763
Standard deviation of dissociation constant (10-6M): 76
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: 3.11