Details of experiments between the fragments P23634~1232-1241 and Q86UL8~410-522
Note that the results of all experiments are listed, regardless of the modification states of the fragments.



Experiment series 1

Protein A protein: ATP2B4
Protein A fragment: 1232-1241
Protein A site: PBM
Protein A sequence: SSLQSLETSV
Protein A construct: biotin-ttds-SSLQSLETSV

Protein B protein: MAGI2
Protein B fragment: 410-522
Protein B site: PDZ_2
Protein B construct: his6-MBP-TEVsite-PDZ

Measured dissociation constant (10-6M): 43.72
Standard deviation of dissociation constant (10-6M): 3.29
Experiment method: competitive FP
Details of affinity fitting: Competitive binding equation in ProFit

PUBMED ID of publication: 36115835
Number of measurements: 3
Measured pKd: 4.36


Experiment series 2

Protein A protein: ATP2B4
Protein A fragment: 1232-1241
Protein A site: PBM
Protein A sequence: SSLQSLETSV
Protein A construct: biotin-ttds-SSLQSLETSV

Protein B protein: MAGI2
Protein B fragment: 410-522
Protein B site: PDZ_2
Protein B construct: his6-MBP-TEVsite-PDZ

Average holdup BI: 0.09
Immobilized partner concentration in holdup experiment (10-6M): 7
Experiment method: SAPF_holdup
Details of affinity fitting: fluorescein + mCherry internal standards + normal layout
PUBMED ID of publication: 36115835
Number of measurements: 1
The affinity was below the detection threshold of the assay.


Experiment series 3

Protein A protein: ATP2B4
Protein A fragment: 1232-1241
Protein A site: PBM
Protein A sequence: SSLQSLETSV
Protein A construct: biotin-ttds-SSLQSLETSV

Protein B protein: MAGI2
Protein B fragment: 410-522
Protein B site: PDZ_2
Protein B construct: his6-MBP-TEVsite-PDZ

Average holdup BI: 0.31
Normalized holdup BI: 0.34
Immobilized partner concentration in holdup experiment (10-6M): 18
Experiment method: DAPF_holdup
Details of affinity fitting: fluorescein + mCherry internal standards + normalization based on CALIP_holdup data + reverse layout
PUBMED ID of publication: 36115835
Number of measurements: 1
Measured pKd: 4.49


Experiment series 4

Protein A protein: ATP2B4
Protein A fragment: 1232-1241
Protein A site: PBM
Protein A sequence: SSLQSLETSV
Protein A construct: biotin-ttds-SSLQSLETSV

Protein B protein: MAGI2
Protein B fragment: 410-522
Protein B site: PDZ_2
Protein B construct: his6-MBP-TEVsite-PDZ

Average holdup BI: 0.16
Normalized holdup BI: 0.18
Immobilized partner concentration in holdup experiment (10-6M): 18
Experiment method: DAPF_holdup
Details of affinity fitting: fluorescein + mCherry internal standards + normalization based on CALIP_holdup data + reverse layout
Experimental details: not reported internal standards of holdup layout #6
PUBMED ID of publication: 36115835
Number of measurements: 1
Measured pKd: 4.09