Details of experiments between P31947 and P27448
Note that the results of all experiments are listed, regardless of the modification states of the fragments.



Experiment series 1

Protein A protein: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 559-568
Protein B site: 14-3-3_pThr564
Protein B modification: (TPO)564
Protein B sequence: TASRSTFHGQ
Protein B construct: TASRS(pThr)FHGQ (crude synthetic peptide)

Measured dissociation constant (10-6M): <100
Immobilized partner concentration in holdup experiment (10-6M): 142
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: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 596-605
Protein B site: 14-3-3_pSer601
Protein B modification: (SEP)601
Protein B sequence: TRSRGSTNLF
Protein B construct: TRSRG(pSer)TNLF (crude synthetic peptide)

Average holdup BI: 0.29
Holdup BI standard deviation: 0.03
Immobilized partner concentration in holdup experiment (10-6M): 142
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 5.77
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: 3.45


Experiment series 3

Protein A protein: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 596-605
Protein B site: 14-3-3_pSer601
Protein B modification: (SEP)601
Protein B sequence: TRSRGSTNLF
Protein B construct: TRSRG(pSer)TNLF (crude synthetic peptide)

Average holdup BI: 0.2
Holdup BI standard deviation: 0.02
Immobilized partner concentration in holdup experiment (10-6M): 113
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 5.63
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
The affinity was below the detection threshold of the assay.


Experiment series 4

Protein A protein: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A modification: 100_uM_FCA
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 596-605
Protein B site: 14-3-3_pSer601
Protein B modification: (SEP)601
Protein B sequence: TRSRGSTNLF
Protein B construct: TRSRG(pSer)TNLF (crude synthetic peptide)

Average holdup BI: 0.21
Holdup BI standard deviation: 0.04
Immobilized partner concentration in holdup experiment (10-6M): 111
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 4.12
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 5

Protein A protein: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A modification: 100_uM_FCA
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 538-547
Protein B site: 14-3-3_pSer543
Protein B modification: (SEP)543
Protein B sequence: VASTHSISSA
Protein B construct: VASTH(pSer)ISSA (crude synthetic peptide)

Average holdup BI: -0.06
Holdup BI standard deviation: 0.08
Immobilized partner concentration in holdup experiment (10-6M): 111
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.76
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: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A modification: 100_uM_FCA
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 535-544
Protein B site: 14-3-3_pSer540
Protein B modification: (SEP)540
Protein B sequence: RTPVASTHSI
Protein B construct: RTPVA(pSer)THSI (crude synthetic peptide)

Average holdup BI: -0.07
Holdup BI standard deviation: 0.11
Immobilized partner concentration in holdup experiment (10-6M): 111
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: 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: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 91-100
Protein B site: 14-3-3_pSer96
Protein B modification: (SEP)96
Protein B sequence: QLNPTSLQKL
Protein B construct: QLNPT(pSer)LQKL (crude synthetic peptide)

Average holdup BI: 0.05
Holdup BI standard deviation: 0.08
Immobilized partner concentration in holdup experiment (10-6M): 113
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.5
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 8

Protein A protein: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 538-547
Protein B site: 14-3-3_pSer543
Protein B modification: (SEP)543
Protein B sequence: VASTHSISSA
Protein B construct: VASTH(pSer)ISSA (crude synthetic peptide)

Average holdup BI: -0.02
Holdup BI standard deviation: 0.04
Immobilized partner concentration in holdup experiment (10-6M): 142
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.46
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: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A modification: 100_uM_FCA
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 486-495
Protein B site: 14-3-3_pThr491
Protein B modification: (TPO)491
Protein B sequence: RKKSSTVPSS
Protein B construct: RKKSS(pThr)VPSS (crude synthetic peptide)

Average holdup BI: 0.05
Holdup BI standard deviation: 0.09
Immobilized partner concentration in holdup experiment (10-6M): 111
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.45
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: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 535-544
Protein B site: 14-3-3_pSer540
Protein B modification: (SEP)540
Protein B sequence: RTPVASTHSI
Protein B construct: RTPVA(pSer)THSI (crude synthetic peptide)

Average holdup BI: -0.02
Holdup BI standard deviation: 0.05
Immobilized partner concentration in holdup experiment (10-6M): 142
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.4
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
The affinity was below the detection threshold of the assay.


Experiment series 11

Protein A protein: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A modification: 100_uM_FCA
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 85-94
Protein B site: 14-3-3_pThr90
Protein B modification: (TPO)90
Protein B sequence: KIIDKTQLNP
Protein B construct: KIIDK(pThr)QLNP (crude synthetic peptide)

Average holdup BI: 0.09
Holdup BI standard deviation: 0.18
Immobilized partner concentration in holdup experiment (10-6M): 111
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.4
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: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 85-94
Protein B site: 14-3-3_pThr90
Protein B modification: (TPO)90
Protein B sequence: KIIDKTQLNP
Protein B construct: KIIDK(pThr)QLNP (crude synthetic peptide)

Average holdup BI: -0.03
Holdup BI standard deviation: 0.09
Immobilized partner concentration in holdup experiment (10-6M): 142
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.33
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 13

Protein A protein: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 538-547
Protein B site: 14-3-3_pSer543
Protein B modification: (SEP)543
Protein B sequence: VASTHSISSA
Protein B construct: VASTH(pSer)ISSA (crude synthetic peptide)

Average holdup BI: -0.02
Holdup BI standard deviation: 0.07
Immobilized partner concentration in holdup experiment (10-6M): 113
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.27
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: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A modification: 100_uM_FCA
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 91-100
Protein B site: 14-3-3_pSer96
Protein B modification: (SEP)96
Protein B sequence: QLNPTSLQKL
Protein B construct: QLNPT(pSer)LQKL (crude synthetic peptide)

Average holdup BI: 0.02
Holdup BI standard deviation: 0.08
Immobilized partner concentration in holdup experiment (10-6M): 111
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.17
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 15

Protein A protein: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 486-495
Protein B site: 14-3-3_pThr491
Protein B modification: (TPO)491
Protein B sequence: RKKSSTVPSS
Protein B construct: RKKSS(pThr)VPSS (crude synthetic peptide)

Average holdup BI: 0.01
Holdup BI standard deviation: 0.07
Immobilized partner concentration in holdup experiment (10-6M): 142
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.


Experiment series 16

Protein A protein: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 486-495
Protein B site: 14-3-3_pThr491
Protein B modification: (TPO)491
Protein B sequence: RKKSSTVPSS
Protein B construct: RKKSS(pThr)VPSS (crude synthetic peptide)

Average holdup BI: 0.01
Holdup BI standard deviation: 0.06
Immobilized partner concentration in holdup experiment (10-6M): 113
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.09
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 17

Protein A protein: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 535-544
Protein B site: 14-3-3_pSer540
Protein B modification: (SEP)540
Protein B sequence: RTPVASTHSI
Protein B construct: RTPVA(pSer)THSI (crude synthetic peptide)

Average holdup BI: 0.01
Holdup BI standard deviation: 0.06
Immobilized partner concentration in holdup experiment (10-6M): 113
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.09
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 18

Protein A protein: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 91-100
Protein B site: 14-3-3_pSer96
Protein B modification: (SEP)96
Protein B sequence: QLNPTSLQKL
Protein B construct: QLNPT(pSer)LQKL (crude synthetic peptide)

Average holdup BI: 0.01
Holdup BI standard deviation: 0.08
Immobilized partner concentration in holdup experiment (10-6M): 142
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 19

Protein A protein: SFN
Protein A fragment: 1-248
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: MARK3
Protein B fragment: 85-94
Protein B site: 14-3-3_pThr90
Protein B modification: (TPO)90
Protein B sequence: KIIDKTQLNP
Protein B construct: KIIDK(pThr)QLNP (crude synthetic peptide)

Average holdup BI: 0
Holdup BI standard deviation: 0.1
Immobilized partner concentration in holdup experiment (10-6M): 113
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.01
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.