Details of experiments between Q9UJF2 and P63104
Note that the results of all experiments are listed, regardless of the modification states of the fragments.



Experiment series 1

Protein A protein: RASAL2
Protein A fragment: 612-621
Protein A site: 14-3-3_pThr617
Protein A modification: (TPO)617
Protein A sequence: ITKSLTNPTP
Protein A construct: ITKSL(pThr)NPTP (crude synthetic peptide)

Protein B protein: YWHAZ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3zeta

Average holdup BI: 0.72
Holdup BI standard deviation: 0.02
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): 7.53
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
Measured pKd: 4.28


Experiment series 2

Protein A protein: RASAL2
Protein A fragment: 129-138
Protein A site: 14-3-3_pSer134
Protein A modification: (SEP)134
Protein A sequence: LRRTVSVPSE
Protein A construct: LRRTV(pSer)VPSE (crude synthetic peptide)

Protein B protein: YWHAZ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3zeta

Average holdup BI: 0.82
Holdup BI standard deviation: 0.02
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): 7.29
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: 4.53


Experiment series 3

Protein A protein: RASAL2
Protein A fragment: 836-845
Protein A site: 14-3-3_pSer841
Protein A modification: (SEP)841
Protein A sequence: KRSTQSEDFS
Protein A construct: KRSTQ(pSer)EDFS (crude synthetic peptide)

Protein B protein: YWHAZ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3zeta

Average holdup BI: 0.46
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): 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
Measured pKd: 3.82


Experiment series 4

Protein A protein: RASAL2
Protein A fragment: 844-853
Protein A site: 14-3-3_pThr849
Protein A modification: (TPO)849
Protein A sequence: FSRRHTVPDR
Protein A construct: FSRRH(pThr)VPDR (crude synthetic peptide)

Protein B protein: YWHAZ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3zeta

Average holdup BI: 0.86
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): 3.93
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: 4.67


Experiment series 5

Protein A protein: RASAL2
Protein A fragment: 84-93
Protein A site: 14-3-3_pSer89
Protein A modification: (SEP)89
Protein A sequence: LKESRSHESL
Protein A construct: LKESR(pSer)HESL (crude synthetic peptide)

Protein B protein: YWHAZ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3zeta

Average holdup BI: 0.2
Holdup BI standard deviation: 0.06
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): 3.58
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: RASAL2
Protein A fragment: 731-740
Protein A site: 14-3-3_pSer736
Protein A modification: (SEP)736
Protein A sequence: IRLTGSQLSI
Protein A construct: IRLTG(pSer)QLSI (crude synthetic peptide)

Protein B protein: YWHAZ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3zeta

Average holdup BI: -0.47
Holdup BI standard deviation: 0.55
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): 1.48
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: RASAL2
Protein A fragment: 734-743
Protein A site: 14-3-3_pSer739
Protein A modification: (SEP)739
Protein A sequence: TGSQLSITQV
Protein A construct: TGSQL(pSer)ITQV (crude synthetic peptide)

Protein B protein: YWHAZ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3zeta

Average holdup BI: 0.12
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): 0.51
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 8

Protein A protein: RASAL2
Protein A fragment: 936-945
Protein A site: 14-3-3_pThr941
Protein A modification: (TPO)941
Protein A sequence: IQRQQTQQVQ
Protein A construct: IQRQQ(pThr)QQVQ (crude synthetic peptide)

Protein B protein: YWHAZ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3zeta

Average holdup BI: -0.06
Holdup BI standard deviation: 0.19
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): 0.29
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: RASAL2
Protein A fragment: 882-891
Protein A site: 14-3-3_pSer887
Protein A modification: (SEP)887
Protein A sequence: AKAPPSLPHS
Protein A construct: AKAPP(pSer)LPHS (crude synthetic peptide)

Protein B protein: YWHAZ
Protein B fragment: 1-245
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3zeta

Average holdup BI: 0.03
Holdup BI standard deviation: 0.19
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): 0.14
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.