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Related Experiment Video

Updated: Jul 31, 2025

Use of Microscale Thermophoresis to Measure Protein-Lipid Interactions
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Quantifying CBM-Carbohydrate Interactions Using Microscale Thermophoresis.

Haiyang Wu1, Cédric Y Montanier1, Claire Dumon2

  • 1TBI, Université de Toulouse, CNRS, INRAE, INSA, Toulouse, France.

Methods in Molecular Biology (Clifton, N.J.)
|May 6, 2023
PubMed
Summary
This summary is machine-generated.

Microscale thermophoresis quantifies biomolecular interactions, including protein-carbohydrate binding, with high sensitivity. This method rapidly determines affinity constants using minimal sample volumes.

Keywords:
Binding studiesFluorescence quenchingFluorescent labelKd (dissociation constant)Microscale thermophoresis (MST)

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Area of Science:

  • Biochemistry
  • Biophysics
  • Analytical Chemistry

Background:

  • Microscale thermophoresis (MST) is a sensitive technique for analyzing biomolecular interactions.
  • It enables rapid determination of affinity constants in microliter volumes.
  • MST is valuable for studying diverse molecular binding events.

Purpose of the Study:

  • To apply Microscale thermophoresis (MST) for quantifying protein-carbohydrate interactions.
  • To demonstrate the utility of MST in studying binding affinities between proteins and carbohydrates.

Main Methods:

  • Titration of carbohydrate-binding modules (CBMs) with their respective ligands.
  • Utilizing Microscale thermophoresis (MST) to measure binding.
  • Employing cellulose nanocrystal (insoluble) and xylohexaose (soluble) as substrates.

Main Results:

  • MST successfully quantified the interaction between CBM3a and cellulose nanocrystal.
  • MST also accurately measured the binding affinity of CBM4 to xylohexaose.
  • The study demonstrates MST's capability for both insoluble and soluble carbohydrate interactions.

Conclusions:

  • Microscale thermophoresis is a versatile and sensitive method for characterizing protein-carbohydrate interactions.
  • MST provides rapid and accurate affinity measurements for both soluble and insoluble substrates.
  • This technique offers a valuable tool for biomolecular interaction studies.