Details of experiments between P31947 and Q6IQ23
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 modification: 100_uM_FCA
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: PLEKHA7
Protein B fragment: 533-542
Protein B site: 14-3-3_pThr538
Protein B modification: (TPO)538
Protein B sequence: RHGSPTAPI-
Protein B construct: FRHGSP(pThr)API (crude synthetic peptide)

Measured dissociation constant (10-6M): <10
Immobilized partner concentration in holdup experiment (10-6M): 111
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: 1
Measured pKd: 5


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: PLEKHA7
Protein B fragment: 533-542
Protein B site: 14-3-3_pThr538
Protein B modification: (TPO)538
Protein B sequence: RHGSPTAPI-
Protein B construct: FRHGSP(pThr)API (crude synthetic peptide)

Measured dissociation constant (10-6M): <10
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: 5


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: PLEKHA7
Protein B fragment: 443-452
Protein B site: 14-3-3_pSer448
Protein B modification: (SEP)448
Protein B sequence: KGDSRSLPLD
Protein B construct: KGDSR(pSer)LPLD (crude synthetic peptide)

Average holdup BI: 0.72
Holdup BI standard deviation: 0.01
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): 9.69
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: 4.35


Experiment series 4

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: PLEKHA7
Protein B fragment: 443-452
Protein B site: 14-3-3_pSer448
Protein B modification: (SEP)448
Protein B sequence: KGDSRSLPLD
Protein B construct: KGDSR(pSer)LPLD (crude synthetic peptide)

Average holdup BI: 0.77
Holdup BI standard deviation: 0.02
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): 8.28
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
Measured pKd: 4.38


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: PLEKHA7
Protein B fragment: 560-569
Protein B site: 14-3-3_pSer565
Protein B modification: (SEP)565
Protein B sequence: VPRSISVPPS
Protein B construct: VPRSI(pSer)VPPS (crude synthetic peptide)

Average holdup BI: 0.97
Holdup BI standard deviation: 0.01
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): 8.09
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
Measured pKd: 5.42


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: PLEKHA7
Protein B fragment: 443-452
Protein B site: 14-3-3_pSer448
Protein B modification: (SEP)448
Protein B sequence: KGDSRSLPLD
Protein B construct: KGDSR(pSer)LPLD (crude synthetic peptide)

Average holdup BI: 0.67
Holdup BI standard deviation: 0.01
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): 7.98
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: 4.27


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: PLEKHA7
Protein B fragment: 560-569
Protein B site: 14-3-3_pSer565
Protein B modification: (SEP)565
Protein B sequence: VPRSISVPPS
Protein B construct: VPRSI(pSer)VPPS (crude synthetic peptide)

Average holdup BI: 0.77
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): 7.26
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: 4.36


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: PLEKHA7
Protein B fragment: 1008-1017
Protein B site: 14-3-3_pThr1013
Protein B modification: (TPO)1013
Protein B sequence: ESRYQTLPGR
Protein B construct: ESRYQ(pThr)LPGR (crude synthetic peptide)

Average holdup BI: 0.59
Holdup BI standard deviation: 0.03
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): 7.12
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
Measured pKd: 4.11


Experiment series 9

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: PLEKHA7
Protein B fragment: 1008-1017
Protein B site: 14-3-3_pThr1013
Protein B modification: (TPO)1013
Protein B sequence: ESRYQTLPGR
Protein B construct: ESRYQ(pThr)LPGR (crude synthetic peptide)

Average holdup BI: 0.63
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): 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: 4.09


Experiment series 10

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: PLEKHA7
Protein B fragment: 1008-1017
Protein B site: 14-3-3_pThr1013
Protein B modification: (TPO)1013
Protein B sequence: ESRYQTLPGR
Protein B construct: ESRYQ(pThr)LPGR (crude synthetic peptide)

Average holdup BI: 0.59
Holdup BI standard deviation: 0.03
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): 5.82
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: 4.11


Experiment series 11

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: PLEKHA7
Protein B fragment: 467-476
Protein B site: 14-3-3_pThr472
Protein B modification: (TPO)472
Protein B sequence: PENYQTLPKS
Protein B construct: PENYQ(pThr)LPKS (crude synthetic peptide)

Average holdup BI: 0.15
Holdup BI standard deviation: 0.02
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): 5.3
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: 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: PLEKHA7
Protein B fragment: 467-476
Protein B site: 14-3-3_pThr472
Protein B modification: (TPO)472
Protein B sequence: PENYQTLPKS
Protein B construct: PENYQ(pThr)LPKS (crude synthetic peptide)

Average holdup BI: 0.19
Holdup BI standard deviation: 0.03
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): 4.44
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: 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: PLEKHA7
Protein B fragment: 560-569
Protein B site: 14-3-3_pSer565
Protein B modification: (SEP)565
Protein B sequence: VPRSISVPPS
Protein B construct: VPRSI(pSer)VPPS (crude synthetic peptide)

Average holdup BI: 0.74
Holdup BI standard deviation: 0.04
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): 4.06
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: 4.4


Experiment series 14

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: PLEKHA7
Protein B fragment: 533-542
Protein B site: 14-3-3_pThr538
Protein B modification: (TPO)538
Protein B sequence: RHGSPTAPI-
Protein B construct: FRHGSP(pThr)API (crude synthetic peptide)

Average holdup BI: 0.78
Holdup BI standard deviation: 0.15
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): 4.03
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: 4.48


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: PLEKHA7
Protein B fragment: 467-476
Protein B site: 14-3-3_pThr472
Protein B modification: (TPO)472
Protein B sequence: PENYQTLPKS
Protein B construct: PENYQ(pThr)LPKS (crude synthetic peptide)

Average holdup BI: 0.13
Holdup BI standard deviation: 0.03
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): 3.66
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 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: PLEKHA7
Protein B fragment: 421-430
Protein B site: 14-3-3_pSer426
Protein B modification: (SEP)426
Protein B sequence: NPEKHSQRKS
Protein B construct: NPEKH(pSer)QRKS (crude synthetic peptide)

Average holdup BI: 0.92
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): 2.34
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: 4.89


Experiment series 17

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: PLEKHA7
Protein B fragment: 981-990
Protein B site: 14-3-3_pSer986
Protein B modification: (SEP)986
Protein B sequence: LRSYVSEPEL
Protein B construct: LRSYV(pSer)EPEL (crude synthetic peptide)

Average holdup BI: 0.16
Holdup BI standard deviation: 0.06
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): 2.28
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 modification: 100_uM_FCA
Protein A construct: avi-his6-MBP-TEVsite-14-3-3sigma

Protein B protein: PLEKHA7
Protein B fragment: 1032-1041
Protein B site: 14-3-3_pThr1037
Protein B modification: (TPO)1037
Protein B sequence: IAPYVTLRRG
Protein B construct: IAPYV(pThr)LRRG (crude synthetic peptide)

Average holdup BI: 0.12
Holdup BI standard deviation: 0.06
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): 1.95
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 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: PLEKHA7
Protein B fragment: 1032-1041
Protein B site: 14-3-3_pThr1037
Protein B modification: (TPO)1037
Protein B sequence: IAPYVTLRRG
Protein B construct: IAPYV(pThr)LRRG (crude synthetic peptide)

Average holdup BI: 0.13
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): 1.69
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 20

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: PLEKHA7
Protein B fragment: 603-612
Protein B site: 14-3-3_pSer608
Protein B modification: (SEP)608
Protein B sequence: RSVDISLGDS
Protein B construct: RSVDI(pSer)LGDS (crude synthetic peptide)

Average holdup BI: -0.11
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): 1.54
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 21

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: PLEKHA7
Protein B fragment: 897-906
Protein B site: 14-3-3_pThr902
Protein B modification: (TPO)902
Protein B sequence: QLRKVTSPLQ
Protein B construct: QLRKV(pThr)SPLQ (crude synthetic peptide)

Average holdup BI: 0.06
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): 1.3
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: 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: PLEKHA7
Protein B fragment: 1032-1041
Protein B site: 14-3-3_pThr1037
Protein B modification: (TPO)1037
Protein B sequence: IAPYVTLRRG
Protein B construct: IAPYV(pThr)LRRG (crude synthetic peptide)

Average holdup BI: 0.11
Holdup BI standard deviation: 0.09
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): 1.29
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 23

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: PLEKHA7
Protein B fragment: 897-906
Protein B site: 14-3-3_pThr902
Protein B modification: (TPO)902
Protein B sequence: QLRKVTSPLQ
Protein B construct: QLRKV(pThr)SPLQ (crude synthetic peptide)

Average holdup BI: 0.08
Holdup BI standard deviation: 0.07
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): 1.18
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 24

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: PLEKHA7
Protein B fragment: 603-612
Protein B site: 14-3-3_pSer608
Protein B modification: (SEP)608
Protein B sequence: RSVDISLGDS
Protein B construct: RSVDI(pSer)LGDS (crude synthetic peptide)

Average holdup BI: 0.04
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): 0.95
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 25

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: PLEKHA7
Protein B fragment: 599-608
Protein B site: 14-3-3_pSer604
Protein B modification: (SEP)604
Protein B sequence: PDQRRSVDIS
Protein B construct: PDQRR(pSer)VDIS (crude synthetic peptide)

Average holdup BI: 0.04
Holdup BI standard deviation: 0.05
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): 0.95
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 26

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: PLEKHA7
Protein B fragment: 1105-1114
Protein B site: 14-3-3_pSer1110
Protein B modification: (SEP)1110
Protein B sequence: SSRYLSRPLP
Protein B construct: SSRYL(pSer)RPLP (crude synthetic peptide)

Average holdup BI: 0.1
Holdup BI standard deviation: 0.1
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): 0.94
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 27

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: PLEKHA7
Protein B fragment: 1105-1114
Protein B site: 14-3-3_pSer1110
Protein B modification: (SEP)1110
Protein B sequence: SSRYLSRPLP
Protein B construct: SSRYL(pSer)RPLP (crude synthetic peptide)

Average holdup BI: 0.12
Holdup BI standard deviation: 0.13
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): 0.9
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 28

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: PLEKHA7
Protein B fragment: 599-608
Protein B site: 14-3-3_pSer604
Protein B modification: (SEP)604
Protein B sequence: PDQRRSVDIS
Protein B construct: PDQRR(pSer)VDIS (crude synthetic peptide)

Average holdup BI: 0.03
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): 0.86
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 29

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: PLEKHA7
Protein B fragment: 981-990
Protein B site: 14-3-3_pSer986
Protein B modification: (SEP)986
Protein B sequence: LRSYVSEPEL
Protein B construct: LRSYV(pSer)EPEL (crude synthetic peptide)

Average holdup BI: 0.09
Holdup BI standard deviation: 0.14
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): 0.64
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 30

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: PLEKHA7
Protein B fragment: 981-990
Protein B site: 14-3-3_pSer986
Protein B modification: (SEP)986
Protein B sequence: LRSYVSEPEL
Protein B construct: LRSYV(pSer)EPEL (crude synthetic peptide)

Average holdup BI: 0.08
Holdup BI standard deviation: 0.12
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): 0.63
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 31

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: PLEKHA7
Protein B fragment: 626-635
Protein B site: 14-3-3_pSer631
Protein B modification: (SEP)631
Protein B sequence: HVDRRSMPSM
Protein B construct: HVDRR(pSer)MPSM (crude synthetic peptide)

Average holdup BI: 0.05
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): 0.59
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 32

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: PLEKHA7
Protein B fragment: 603-612
Protein B site: 14-3-3_pSer608
Protein B modification: (SEP)608
Protein B sequence: RSVDISLGDS
Protein B construct: RSVDI(pSer)LGDS (crude synthetic peptide)

Average holdup BI: -0.04
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): 0.55
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 33

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: PLEKHA7
Protein B fragment: 897-906
Protein B site: 14-3-3_pThr902
Protein B modification: (TPO)902
Protein B sequence: QLRKVTSPLQ
Protein B construct: QLRKV(pThr)SPLQ (crude synthetic peptide)

Average holdup BI: 0.04
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): 0.5
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 34

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: PLEKHA7
Protein B fragment: 882-891
Protein B site: 14-3-3_pThr887
Protein B modification: (TPO)887
Protein B sequence: FPQLQTYVPY
Protein B construct: FPQLQ(pThr)YVPY (crude synthetic peptide)

Average holdup BI: 0.08
Holdup BI standard deviation: 0.25
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): 0.26
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 35

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: PLEKHA7
Protein B fragment: 421-430
Protein B site: 14-3-3_pSer426
Protein B modification: (SEP)426
Protein B sequence: NPEKHSQRKS
Protein B construct: NPEKH(pSer)QRKS (crude synthetic peptide)

Average holdup BI: -0.19
Holdup BI standard deviation: 0.53
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): 0.26
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 36

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: PLEKHA7
Protein B fragment: 421-430
Protein B site: 14-3-3_pSer426
Protein B modification: (SEP)426
Protein B sequence: NPEKHSQRKS
Protein B construct: NPEKH(pSer)QRKS (crude synthetic peptide)

Average holdup BI: 0.19
Holdup BI standard deviation: 0.36
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): 0.25
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 37

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: PLEKHA7
Protein B fragment: 1105-1114
Protein B site: 14-3-3_pSer1110
Protein B modification: (SEP)1110
Protein B sequence: SSRYLSRPLP
Protein B construct: SSRYL(pSer)RPLP (crude synthetic peptide)

Average holdup BI: 0.05
Holdup BI standard deviation: 0.19
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): 0.22
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 38

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: PLEKHA7
Protein B fragment: 882-891
Protein B site: 14-3-3_pThr887
Protein B modification: (TPO)887
Protein B sequence: FPQLQTYVPY
Protein B construct: FPQLQ(pThr)YVPY (crude synthetic peptide)

Average holdup BI: -0.03
Holdup BI standard deviation: 0.14
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): 0.16
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 39

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: PLEKHA7
Protein B fragment: 626-635
Protein B site: 14-3-3_pSer631
Protein B modification: (SEP)631
Protein B sequence: HVDRRSMPSM
Protein B construct: HVDRR(pSer)MPSM (crude synthetic peptide)

Average holdup BI: -0.27
Holdup BI standard deviation: 1.46
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): 0.15
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 40

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: PLEKHA7
Protein B fragment: 626-635
Protein B site: 14-3-3_pSer631
Protein B modification: (SEP)631
Protein B sequence: HVDRRSMPSM
Protein B construct: HVDRR(pSer)MPSM (crude synthetic peptide)

Average holdup BI: 0.2
Holdup BI standard deviation: 0.7
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): 0.14
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 41

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: PLEKHA7
Protein B fragment: 599-608
Protein B site: 14-3-3_pSer604
Protein B modification: (SEP)604
Protein B sequence: PDQRRSVDIS
Protein B construct: PDQRR(pSer)VDIS (crude synthetic peptide)

Average holdup BI: 0.01
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): 0.09
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 42

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: PLEKHA7
Protein B fragment: 1058-1067
Protein B site: 14-3-3_pSer1063
Protein B modification: (SEP)1063
Protein B sequence: LERLYSGDHQ
Protein B construct: LERLY(pSer)GDHQ (crude synthetic peptide)

Average holdup BI: -0.01
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): 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 43

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: PLEKHA7
Protein B fragment: 1058-1067
Protein B site: 14-3-3_pSer1063
Protein B modification: (SEP)1063
Protein B sequence: LERLYSGDHQ
Protein B construct: LERLY(pSer)GDHQ (crude synthetic peptide)

Average holdup BI: 0
Holdup BI standard deviation: 0.04
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 44

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: PLEKHA7
Protein B fragment: 1058-1067
Protein B site: 14-3-3_pSer1063
Protein B modification: (SEP)1063
Protein B sequence: LERLYSGDHQ
Protein B construct: LERLY(pSer)GDHQ (crude synthetic peptide)

Average holdup BI: 0
Holdup BI standard deviation: 0.06
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): 0.01
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 45

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: PLEKHA7
Protein B fragment: 443-452
Protein B site: 14-3-3_pSer448
Protein B modification: (SEP)448
Protein B sequence: KGDSRSLPLD
Protein B construct: biotin-ttds-KGDSR(pSer)LPLD (HPLC-purified synthetic peptide)

Measured dissociation constant (10-6M): 88
Standard deviation of dissociation constant (10-6M): 7
Experiment method: competitive Fluorescence Polarization
Details of affinity fitting: Competitive binding equation in ProFit

Date of measurement: 2022.02.09
Number of measurements: 3
Measured pKd: 4.06