Details of experiments between P31946 and Q5T5U3
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: ARHGAP21
Protein B fragment: 975-984
Protein B site: 14-3-3_pThr980
Protein B modification: (TPO)980
Protein B sequence: DKREQTTPSE
Protein B construct: DKREQ(pThr)TPSE (crude synthetic peptide)

Measured dissociation constant (10-6M): <100
Immobilized partner concentration in holdup experiment (10-6M): 102
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: 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: ARHGAP21
Protein B fragment: 228-237
Protein B site: 14-3-3_pSer233
Protein B modification: (SEP)233
Protein B sequence: SKQQTSTPVL
Protein B construct: SKQQT(pSer)TPVL (crude synthetic peptide)

Average holdup BI: 0.29
Holdup BI standard deviation: 0.04
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): 5.78
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: 3.6


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: ARHGAP21
Protein B fragment: 228-237
Protein B site: 14-3-3_pSer233
Protein B modification: (SEP)233
Protein B sequence: SKQQTSTPVL
Protein B construct: SKQQT(pSer)TPVL (crude synthetic peptide)

Average holdup BI: 0.27
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): 5.69
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: 3.43


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: ARHGAP21
Protein B fragment: 666-675
Protein B site: 14-3-3_pSer671
Protein B modification: (SEP)671
Protein B sequence: WVRTDSAPDQ
Protein B construct: WVRTD(pSer)APDQ (crude synthetic peptide)

Average holdup BI: 0.17
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): 4.61
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 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: ARHGAP21
Protein B fragment: 1492-1501
Protein B site: 14-3-3_pSer1497
Protein B modification: (SEP)1497
Protein B sequence: SLGKESTPSE
Protein B construct: SLGKE(pSer)TPSE (crude synthetic peptide)

Average holdup BI: -0.12
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): 3.24
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 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: ARHGAP21
Protein B fragment: 454-463
Protein B site: 14-3-3_pSer459
Protein B modification: (SEP)459
Protein B sequence: RQRSVSQERL
Protein B construct: RQRSV(pSer)QERL (crude synthetic peptide)

Average holdup BI: 0.2
Holdup BI standard deviation: 0.08
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): 2.85
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 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: ARHGAP21
Protein B fragment: 1798-1807
Protein B site: 14-3-3_pThr1803
Protein B modification: (TPO)1803
Protein B sequence: IRRRHTLGGH
Protein B construct: IRRRH(pThr)LGGH (crude synthetic peptide)

Average holdup BI: 0.65
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): 2.52
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: 4.26


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: ARHGAP21
Protein B fragment: 666-675
Protein B site: 14-3-3_pSer671
Protein B modification: (SEP)671
Protein B sequence: WVRTDSAPDQ
Protein B construct: WVRTD(pSer)APDQ (crude synthetic peptide)

Average holdup BI: 0.07
Holdup BI standard deviation: 0.04
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): 1.81
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: 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: ARHGAP21
Protein B fragment: 1712-1721
Protein B site: 14-3-3_pSer1717
Protein B modification: (SEP)1717
Protein B sequence: KSDSGSLGDA
Protein B construct: KSDSG(pSer)LGDA (crude synthetic peptide)

Average holdup BI: -0.39
Holdup BI standard deviation: 0.29
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): 1.65
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 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: ARHGAP21
Protein B fragment: 607-616
Protein B site: 14-3-3_pSer612
Protein B modification: (SEP)612
Protein B sequence: LPRGISQDRS
Protein B construct: LPRGI(pSer)QDRS (crude synthetic peptide)

Average holdup BI: 0.07
Holdup BI standard deviation: 0.06
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): 1.12
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: 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: ARHGAP21
Protein B fragment: 454-463
Protein B site: 14-3-3_pSer459
Protein B modification: (SEP)459
Protein B sequence: RQRSVSQERL
Protein B construct: RQRSV(pSer)QERL (crude synthetic peptide)

Average holdup BI: 0.22
Holdup BI standard deviation: 0.22
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): 1
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 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: ARHGAP21
Protein B fragment: 1737-1746
Protein B site: 14-3-3_pSer1742
Protein B modification: (SEP)1742
Protein B sequence: MKKGKSTGSL
Protein B construct: MKKGK(pSer)TGSL (crude synthetic peptide)

Average holdup BI: 0.22
Holdup BI standard deviation: 0.21
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): 0.94
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 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: ARHGAP21
Protein B fragment: 52-61
Protein B site: 14-3-3_pSer57
Protein B modification: (SEP)57
Protein B sequence: TLKRTSQGFG
Protein B construct: TLKRT(pSer)QGFG (crude synthetic peptide)

Average holdup BI: 0.02
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): 0.71
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: ARHGAP21
Protein B fragment: 1492-1501
Protein B site: 14-3-3_pSer1497
Protein B modification: (SEP)1497
Protein B sequence: SLGKESTPSE
Protein B construct: SLGKE(pSer)TPSE (crude synthetic peptide)

Average holdup BI: -0.04
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): 0.65
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: 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: ARHGAP21
Protein B fragment: 1487-1496
Protein B site: 14-3-3_pSer1492
Protein B modification: (SEP)1492
Protein B sequence: KDEKISLGKE
Protein B construct: KDEKI(pSer)LGKE (crude synthetic peptide)

Average holdup BI: 0.08
Holdup BI standard deviation: 0.14
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): 0.54
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: 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: ARHGAP21
Protein B fragment: 1737-1746
Protein B site: 14-3-3_pSer1742
Protein B modification: (SEP)1742
Protein B sequence: MKKGKSTGSL
Protein B construct: MKKGK(pSer)TGSL (crude synthetic peptide)

Average holdup BI: 0.06
Holdup BI standard deviation: 0.11
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): 0.51
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: 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: ARHGAP21
Protein B fragment: 52-61
Protein B site: 14-3-3_pSer57
Protein B modification: (SEP)57
Protein B sequence: TLKRTSQGFG
Protein B construct: TLKRT(pSer)QGFG (crude synthetic peptide)

Average holdup BI: 0.03
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): 0.39
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: 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: ARHGAP21
Protein B fragment: 607-616
Protein B site: 14-3-3_pSer612
Protein B modification: (SEP)612
Protein B sequence: LPRGISQDRS
Protein B construct: LPRGI(pSer)QDRS (crude synthetic peptide)

Average holdup BI: 0.02
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): 0.25
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
The affinity was below the detection threshold of the assay.


Experiment series 19

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: ARHGAP21
Protein B fragment: 1391-1400
Protein B site: 14-3-3_pSer1396
Protein B modification: (SEP)1396
Protein B sequence: TKSKGSWGSG
Protein B construct: TKSKG(pSer)WGSG (crude synthetic peptide)

Average holdup BI: -0.22
Holdup BI standard deviation: 0.88
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): 0.23
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 20

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: ARHGAP21
Protein B fragment: 5-14
Protein B site: 14-3-3_pSer10
Protein B modification: (SEP)10
Protein B sequence: RRTGLSEGDG
Protein B construct: RRTGL(pSer)EGDG (crude synthetic peptide)

Average holdup BI: -0.12
Holdup BI standard deviation: 1.46
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): 0.06
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 21

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: ARHGAP21
Protein B fragment: 1712-1721
Protein B site: 14-3-3_pSer1717
Protein B modification: (SEP)1717
Protein B sequence: KSDSGSLGDA
Protein B construct: KSDSG(pSer)LGDA (crude synthetic peptide)

Average holdup BI: 0.04
Holdup BI standard deviation: 0.65
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): 0.05
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 22

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: ARHGAP21
Protein B fragment: 1487-1496
Protein B site: 14-3-3_pSer1492
Protein B modification: (SEP)1492
Protein B sequence: KDEKISLGKE
Protein B construct: KDEKI(pSer)LGKE (crude synthetic peptide)

Average holdup BI: 0
Holdup BI standard deviation: 0.07
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
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.