Details of experiments between the fragments Q6R327~1214-1223 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: RICTOR
Protein A fragment: 1214-1223
Protein A site: 14-3-3_pSer1219
Protein A modification: (SEP)1219
Protein A sequence: KIRSQSFNTD
Protein A construct: KIRSQ(pSer)FNTD (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: 0.45
Holdup BI standard deviation: 0.03
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): 7.19
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: 3.77


Experiment series 2

Protein A protein: RICTOR
Protein A fragment: 1214-1223
Protein A site: 14-3-3_pSer1219
Protein A modification: (SEP)1219
Protein A sequence: KIRSQSFNTD
Protein A construct: KIRSQ(pSer)FNTD (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: 0.36
Holdup BI standard deviation: 0.03
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): 6.03
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: 3.7


Experiment series 3

Protein A protein: RICTOR
Protein A fragment: 1214-1223
Protein A site: 14-3-3_pSer1219
Protein A modification: (SEP)1219
Protein A sequence: KIRSQSFNTD
Protein A construct: KIRSQ(pSer)FNTD (crude synthetic peptide)

Protein B protein: SFN
Protein B fragment: 1-248
Protein B site: 14-3-3
Protein B modification: 100_uM_FCA
Protein B construct: avi-his6-MBP-TEVsite-14-3-3sigma

Average holdup BI: 0.3
Holdup BI standard deviation: 0.07
Immobilized partner concentration in holdup experiment (10-6M): 111
P value (usually -log10(P Two-sided unpaired T-test), but double check the experimental details): 3.09
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: 3.58


Experiment series 4

Protein A protein: RICTOR
Protein A fragment: 1214-1223
Protein A site: 14-3-3_pSer1219
Protein A modification: (SEP)1219
Protein A sequence: KIRSQSFNTD
Protein A construct: biotin-ttds-KIRSQ(pSer)FNTD (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): 209
Standard deviation of dissociation constant (10-6M): 18
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: 3.68