Details of experiments between the fragments Q13136~663-672 and P62258~1-255
Note that the results of all experiments are listed, regardless of the modification states of the fragments.
Experiment series 1
Protein A protein: PPFIA1
Protein A fragment: 663-672
Protein A site: 14-3-3_pSer668
Protein A modification: (SEP)668
Protein A sequence: RVGSGSLDNL
Protein A construct: biotin-ttds-RVGSG(pSer)LDNL (HPLC-purified synthetic peptide)
Protein B protein: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon
Measured dissociation constant (10-6M): below threshold
Experiment method: competitive Fluorescence Polarization
Details of affinity fitting: Competitive binding equation in ProFit
Date of measurement: 2022.02.09
Number of measurements: 3
The affinity was below the detection threshold of the assay.
Experiment series 2
Protein A protein: PPFIA1
Protein A fragment: 663-672
Protein A site: 14-3-3_pSer668
Protein A modification: (SEP)668
Protein A sequence: RVGSGSLDNL
Protein A construct: RVGSG(pSer)LDNL (crude synthetic peptide)
Protein B protein: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon
Average holdup BI: 0.15
Holdup BI standard deviation: 0.02
Immobilized partner concentration in holdup experiment (10-6M): 116
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 4.88
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 3
Protein A protein: PPFIA1
Protein A fragment: 663-672
Protein A site: 14-3-3_pSer668
Protein A modification: (SEP)668
Protein A sequence: RVGSGSLDNL
Protein A construct: RVGSG(pSer)LDNL (crude synthetic peptide)
Protein B protein: YWHAE
Protein B fragment: 1-255
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3epsilon
Average holdup BI: 0.18
Holdup BI standard deviation: 0.04
Immobilized partner concentration in holdup experiment (10-6M): 143
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 4.27
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: 3.19