Details of experiments between the fragments O00499~513-593 and Q07666~32-46
Note that the results of all experiments are listed, regardless of the modification states of the fragments.



Experiment series 1

Protein A protein: BIN1
Protein A fragment: 513-593
Protein A site: SH3
Protein A construct: avi(biotin)-his6-MBP-TEVsite-SH3

Protein B protein: KHDRBS1
Protein B fragment: 32-46
Protein B site: PxxP_1
Protein B sequence: QTPSRQPPLPHRSRG
Protein B construct: Biotinylated 15-mer peptide (crude)

Average holdup BI: 0.27
Holdup BI standard deviation: 0.07
Immobilized partner concentration in holdup experiment (10-6M): 18
Experiment method: HU (DAPF)
Date of measurement: 2022.06.29.
Number of measurements: 2
Measured pKd: 4.33


Experiment series 2

Protein A protein: BIN1
Protein A fragment: 513-593
Protein A site: SH3
Protein A modification: T532M
Protein A construct: avi(biotin)-his6-MBP-TEVsite-SH3

Protein B protein: KHDRBS1
Protein B fragment: 32-46
Protein B site: PxxP_1
Protein B sequence: QTPSRQPPLPHRSRG
Protein B construct: Biotinylated 15-mer peptide (crude)

Average holdup BI: 0.21
Holdup BI standard deviation: 0.04
Immobilized partner concentration in holdup experiment (10-6M): 18
Experiment method: HU (DAPF)
Date of measurement: 2022.06.29.
Number of measurements: 2
Measured pKd: 4.18


Experiment series 3

Protein A protein: BIN1
Protein A fragment: 513-593
Protein A site: SH3
Protein A modification: D537V
Protein A construct: avi(biotin)-his6-MBP-TEVsite-SH3

Protein B protein: KHDRBS1
Protein B fragment: 32-46
Protein B site: PxxP_1
Protein B sequence: QTPSRQPPLPHRSRG
Protein B construct: Biotinylated 15-mer peptide (crude)

Average holdup BI: 0.02
Holdup BI standard deviation: 0.01
Immobilized partner concentration in holdup experiment (10-6M): 18
Experiment method: HU (DAPF)
Date of measurement: 2022.10.24.
Number of measurements: 2
The affinity was below the detection threshold of the assay.


Experiment series 4

Protein A protein: BIN1
Protein A fragment: 513-593
Protein A site: SH3
Protein A modification: F584S
Protein A construct: avi(biotin)-his6-MBP-TEVsite-SH3

Protein B protein: KHDRBS1
Protein B fragment: 32-46
Protein B site: PxxP_1
Protein B sequence: QTPSRQPPLPHRSRG
Protein B construct: Biotinylated 15-mer peptide (crude)

Average holdup BI: -0.06
Holdup BI standard deviation: 0.07
Immobilized partner concentration in holdup experiment (10-6M): 18
Experiment method: HU (DAPF)
Date of measurement: 2022.10.24.
Number of measurements: 2
The affinity was below the detection threshold of the assay.


Experiment series 5

Protein A protein: BIN1
Protein A fragment: 513-593
Protein A site: SH3
Protein A modification: P551L
Protein A construct: avi(biotin)-his6-MBP-TEVsite-SH3

Protein B protein: KHDRBS1
Protein B fragment: 32-46
Protein B site: PxxP_1
Protein B sequence: QTPSRQPPLPHRSRG
Protein B construct: Biotinylated 15-mer peptide (crude)

Average holdup BI: 0.06
Holdup BI standard deviation: 0.03
Immobilized partner concentration in holdup experiment (10-6M): 6
Experiment method: HU (DAPF)
Details of affinity fitting: Bait concentration was adjusted to fit the profile to WT
Date of measurement: 2022.10.24.
Number of measurements: 2
Measured pKd: 4.06


Experiment series 6

Protein A protein: BIN1
Protein A fragment: 513-593
Protein A site: SH3
Protein A modification: Q540H
Protein A construct: avi(biotin)-his6-MBP-TEVsite-SH3

Protein B protein: KHDRBS1
Protein B fragment: 32-46
Protein B site: PxxP_1
Protein B sequence: QTPSRQPPLPHRSRG
Protein B construct: Biotinylated 15-mer peptide (crude)

Average holdup BI: 0.25
Holdup BI standard deviation: 0.02
Immobilized partner concentration in holdup experiment (10-6M): 18
Experiment method: HU (DAPF)
Date of measurement: 2022.10.24.
Number of measurements: 2
Measured pKd: 4.29


Experiment series 7

Protein A protein: BIN1
Protein A fragment: 513-593
Protein A site: SH3
Protein A modification: T532M
Protein A construct: avi(biotin)-his6-MBP-TEVsite-SH3

Protein B protein: KHDRBS1
Protein B fragment: 32-46
Protein B site: PxxP_1
Protein B sequence: QTPSRQPPLPHRSRG
Protein B construct: Biotinylated 15-mer peptide (crude)

Average holdup BI: 0.2
Holdup BI standard deviation: 0.01
Immobilized partner concentration in holdup experiment (10-6M): 18
Experiment method: HU (DAPF)
Date of measurement: 2022.10.24.
Number of measurements: 2
Measured pKd: 4.15


Experiment series 8

Protein A protein: BIN1
Protein A fragment: 513-593
Protein A site: SH3
Protein A modification: V566M
Protein A construct: avi(biotin)-his6-MBP-TEVsite-SH3

Protein B protein: KHDRBS1
Protein B fragment: 32-46
Protein B site: PxxP_1
Protein B sequence: QTPSRQPPLPHRSRG
Protein B construct: Biotinylated 15-mer peptide (crude)

Average holdup BI: 0.2
Holdup BI standard deviation: 0.01
Immobilized partner concentration in holdup experiment (10-6M): 18
Experiment method: HU (DAPF)
Date of measurement: 2022.10.24.
Number of measurements: 2
Measured pKd: 4.15


Experiment series 9

Protein A protein: BIN1
Protein A fragment: 513-593
Protein A site: SH3
Protein A modification: V583I
Protein A construct: avi(biotin)-his6-MBP-TEVsite-SH3

Protein B protein: KHDRBS1
Protein B fragment: 32-46
Protein B site: PxxP_1
Protein B sequence: QTPSRQPPLPHRSRG
Protein B construct: Biotinylated 15-mer peptide (crude)

Average holdup BI: 0.05
Holdup BI standard deviation: 0.03
Immobilized partner concentration in holdup experiment (10-6M): 9
Experiment method: HU (DAPF)
Details of affinity fitting: Bait concentration was adjusted to fit the profile to WT
Date of measurement: 2022.10.24.
Number of measurements: 2
Measured pKd: 3.81


Experiment series 10

Protein A protein: BIN1
Protein A fragment: 513-593
Protein A site: SH3
Protein A construct: avi(biotin)-his6-MBP-TEVsite-SH3

Protein B protein: KHDRBS1
Protein B fragment: 32-46
Protein B site: PxxP_1
Protein B sequence: QTPSRQPPLPHRSRG
Protein B construct: Biotinylated 15-mer peptide (crude)

Average holdup BI: 0.2
Holdup BI standard deviation: 0.03
Immobilized partner concentration in holdup experiment (10-6M): 18
Experiment method: HU (DAPF)
Date of measurement: 2022.10.24.
Number of measurements: 2
Measured pKd: 4.16


Experiment series 11

Protein A protein: BIN1
Protein A fragment: 513-593
Protein A site: SH3
Protein A modification: Y531S
Protein A construct: avi(biotin)-his6-MBP-TEVsite-SH3

Protein B protein: KHDRBS1
Protein B fragment: 32-46
Protein B site: PxxP_1
Protein B sequence: QTPSRQPPLPHRSRG
Protein B construct: Biotinylated 15-mer peptide (crude)

Average holdup BI: 0.02
Holdup BI standard deviation: 0.03
Immobilized partner concentration in holdup experiment (10-6M): 18
Experiment method: HU (DAPF)
Date of measurement: 2022.10.24.
Number of measurements: 2
The affinity was below the detection threshold of the assay.


Experiment series 12

Protein A protein: BIN1
Protein A fragment: 513-593
Protein A site: SH3
Protein A modification: R581C
Protein A construct: avi(biotin)-his6-MBP-TEVsite-SH3

Protein B protein: KHDRBS1
Protein B fragment: 32-46
Protein B site: PxxP_1
Protein B sequence: QTPSRQPPLPHRSRG
Protein B construct: Biotinylated 15-mer peptide (crude)

Average holdup BI: 0.07
Holdup BI standard deviation: 0.05
Immobilized partner concentration in holdup experiment (10-6M): 6
Experiment method: HU (DAPF)
Details of affinity fitting: Bait concentration was adjusted to fit the profile to WT
Date of measurement: 2022.10.24.
Number of measurements: 2
Measured pKd: 4.12