Details of experiments between the fragments P61981~1-247 and Q9Y4H2~574-583
Note that the results of all experiments are listed, regardless of the modification states of the fragments.
Experiment series 1
Protein A protein: YWHAG
Protein A fragment: 1-247
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3gamma
Protein B protein: IRS2
Protein B fragment: 574-583
Protein B site: 14-3-3_pThr579
Protein B modification: (TPO)579
Protein B sequence: RTYSLTTPAR
Protein B construct: RTYSL(pThr)TPAR (crude synthetic peptide)
Measured dissociation constant (10-6M): <10
Immobilized partner concentration in holdup experiment (10-6M): 134
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: YWHAG
Protein A fragment: 1-247
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3gamma
Protein B protein: IRS2
Protein B fragment: 574-583
Protein B site: 14-3-3_pThr579
Protein B modification: (TPO)579
Protein B sequence: RTYSLTTPAR
Protein B construct: RTYSL(pThr)TPAR (crude synthetic peptide)
Measured dissociation constant (10-6M): <1
Immobilized partner concentration in holdup experiment (10-6M): 129
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: 6
Experiment series 3
Protein A protein: YWHAG
Protein A fragment: 1-247
Protein A site: 14-3-3
Protein A modification: 100_uM_FCA
Protein A construct: avi-his6-MBP-TEVsite-14-3-3gamma
Protein B protein: IRS2
Protein B fragment: 574-583
Protein B site: 14-3-3_pThr579
Protein B modification: (TPO)579
Protein B sequence: RTYSLTTPAR
Protein B construct: RTYSL(pThr)TPAR (crude synthetic peptide)
Average holdup BI: 0.99
Holdup BI standard deviation: 0
Immobilized partner concentration in holdup experiment (10-6M): 115
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 5.54
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: 5.97
Experiment series 4
Protein A protein: YWHAG
Protein A fragment: 1-247
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3gamma
Protein B protein: IRS2
Protein B fragment: 574-583
Protein B site: 14-3-3_pThr579
Protein B modification: (TPO)579
Protein B sequence: RTYSLTTPAR
Protein B construct: biotin-ttds-RTYSL(pThr)TPAR (HPLC-purified synthetic peptide)
Measured dissociation constant (10-6M): 4.4
Standard deviation of dissociation constant (10-6M): 0.2
Experiment method: competitive Fluorescence Polarization
Details of affinity fitting: Competitive binding equation in ProFit
Date of measurement: 2022.01.10
Number of measurements: 3
Measured pKd: 5.36
Experiment series 5
Protein A protein: YWHAG
Protein A fragment: 1-247
Protein A site: 14-3-3
Protein A construct: avi-his6-MBP-TEVsite-14-3-3gamma
Protein B protein: IRS2
Protein B fragment: 574-583
Protein B site: 14-3-3_pThr579
Protein B modification: (TPO)579
Protein B sequence: RTYSLTTPAR
Protein B construct: biotin-ttds-RTYSL(pThr)TPAR (HPLC-purified synthetic peptide)
Measured dissociation constant (10-6M): 1.3
Standard deviation of dissociation constant (10-6M): 0.15
Experiment method: competitive Fluorescence Polarization
Details of affinity fitting: Competitive binding equation in ProFit
Date of measurement: 2022.01.18
Number of measurements: 3
Measured pKd: 5.89