Interaction Scheme

Molecule

H leu arg arg trp ser leu gly oh
H-Leu-Arg-Arg-Trp-Ser-Leu-Gly-OH

Host

Scx4 na
sCx4 sodium salt

c = 1.0 µM

Indicator

Lucigenin
Lucigenin

c = 0.5 µM

Binding Properties

𝜈 Molecule 1 : 1 Host
Ka = 5.00⋅105 M-1
Kd =
logKa = 5.7
T 25.0 °C 298 K
Energy kJ mol-1 kcal mol-1
ΔG = -32.53 -7.77
These are the specifications of the determination of the experimental results.
Detection Method: Competitive
Assay Type: Competitive Binding Assay
Technique: Fluorescence
𝛌ex = 367.0 nm
𝛌em = 506.0 nm
Detailed information about the solvation.
Solvent System Buffer System 10 mM phosphate pH-7.0
Solvents water
Additives Sodium dihydrog... 10.0 mM
Sodium hydroxide
Source of Concentration
Total concentration 10.0 mM
pH 7.0
Please find here information about the dataset this interaction is part of.
Citation:

D. Guo, W. Nau, Y. Pan, A. Barba-Bon, A. Hennig, S. Peng, SupraBank 2024, Phosphorylation-Responsive Membrane Transport of Peptides (dataset). https://doi.org/10.34804/supra.20210928233

Link: https://doi.org/10.34804/supra.20210928233
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Please find here information about the scholarly article describing the results derived from that data.
Citation:

S. Peng, A. Barba-Bon, Y.-C. Pan, W. M. Nau, D.-S. Guo, A. Hennig, Angew. Chem. Int. Ed. 2017, 56, 15742–15745.

Link: https://doi.org/10.1002/anie.201707979
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Binding Isotherm Simulations


The plot depicts the binding isotherm simulation of a 1:1 interaction of H-Leu-Arg-Arg-Trp-Ser-Leu-Gly-OH (4.0e-05 M) and sCx4 sodium salt (0 — 8.0e-05 M).