Details of experiments between the fragments Q7Z460~682-691 and P31947~1-248
Note that the results of all experiments are listed, regardless of the modification states of the fragments.
Experiment series 1
Protein A protein: CLASP1
Protein A fragment: 682-691
Protein A site: 14-3-3_pSer687
Protein A modification: (SEP)687
Protein A sequence: KVVSQSQPGS
Protein A construct: KVVSQ(pSer)QPGS (crude synthetic peptide)
Protein B protein: SFN
Protein B fragment: 1-248
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3sigma
Average holdup BI: 0.44
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): 5.67
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: 3.75
Experiment series 2
Protein A protein: CLASP1
Protein A fragment: 682-691
Protein A site: 14-3-3_pSer687
Protein A modification: (SEP)687
Protein A sequence: KVVSQSQPGS
Protein A construct: KVVSQ(pSer)QPGS (crude synthetic peptide)
Protein B protein: SFN
Protein B fragment: 1-248
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3sigma
Average holdup BI: 0.37
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): 3.5
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
Measured pKd: 3.72
Experiment series 3
Protein A protein: CLASP1
Protein A fragment: 682-691
Protein A site: 14-3-3_pSer687
Protein A modification: (SEP)687
Protein A sequence: KVVSQSQPGS
Protein A construct: biotin-ttds-KVVSQ(pSer)QPGS (HPLC-purified synthetic peptide)
Protein B protein: SFN
Protein B fragment: 1-248
Protein B site: 14-3-3
Protein B construct: avi-his6-MBP-TEVsite-14-3-3sigma
Measured dissociation constant (10-6M): 262
Standard deviation of dissociation constant (10-6M): 22
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: 3.58