Details of experiments between P27348 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: YWHAQ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3tau

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): 130
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 2

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

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: 0.78
Holdup BI standard deviation: 0.02
Immobilized partner concentration in holdup experiment (10-6M): 130
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 8.2
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: 4.44


Experiment series 3

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

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: 0.84
Holdup BI standard deviation: 0.01
Immobilized partner concentration in holdup experiment (10-6M): 130
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: 2021.10.13.
Experimental details: -log10(P Two-sided unpaired T-test (4 vs 5))
Number of measurements: 5
Measured pKd: 4.59


Experiment series 4

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

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: 0.58
Holdup BI standard deviation: 0.04
Immobilized partner concentration in holdup experiment (10-6M): 130
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 6.66
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: 4.02


Experiment series 5

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

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: 0.16
Holdup BI standard deviation: 0.02
Immobilized partner concentration in holdup experiment (10-6M): 130
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 5.44
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: YWHAQ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3tau

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: 0.44
Holdup BI standard deviation: 0.08
Immobilized partner concentration in holdup experiment (10-6M): 130
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 3.71
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: 3.79


Experiment series 7

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

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: 0.23
Holdup BI standard deviation: 0.08
Immobilized partner concentration in holdup experiment (10-6M): 130
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 3.05
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
Measured pKd: 3.37


Experiment series 8

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

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: -0.12
Holdup BI standard deviation: 0.09
Immobilized partner concentration in holdup experiment (10-6M): 130
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 2.02
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 9

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

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: 0.19
Holdup BI standard deviation: 0.12
Immobilized partner concentration in holdup experiment (10-6M): 130
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 1.8
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: 3.26


Experiment series 10

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

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: 0.1
Holdup BI standard deviation: 0.07
Immobilized partner concentration in holdup experiment (10-6M): 130
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 1.74
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: YWHAQ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3tau

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: 0.16
Holdup BI standard deviation: 0.14
Immobilized partner concentration in holdup experiment (10-6M): 130
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 1.25
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 12

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

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: 0.06
Immobilized partner concentration in holdup experiment (10-6M): 130
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 13

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

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: 0.06
Immobilized partner concentration in holdup experiment (10-6M): 130
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 0.11
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: YWHAQ
Protein A fragment: 1-245
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3tau

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): 55
Standard deviation of dissociation constant (10-6M): 2
Experiment method: competitive Fluorescence Polarization
Details of affinity fitting: Competitive binding equation in ProFit

Date of measurement: 2022.02.08
Number of measurements: 3
Measured pKd: 4.26