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Exploring Protein-Glycan Interactions: Advances in Nuclear Magnetic Resonance
Published on: August 26, 2025
Study of molecular interactions with 13C DNP-NMR
Mathilde H Lerche1, Sebastian Meier, Pernille R Jensen
1Albeda Research, Gamle Carlsberg Vej 10, 2500 Valby, Denmark. mathilde.lerche@albeda.dk
Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|December 22, 2009
Summary
Dynamic nuclear polarization enhances Nuclear Magnetic Resonance (NMR) spectroscopy, enabling sensitive detection of molecular interactions. This technique makes studying weak interactions and ligand binding feasible at low concentrations.
Area of Science:
- Biochemistry
- Chemical Physics
- Spectroscopy
Background:
- Nuclear Magnetic Resonance (NMR) spectroscopy is a powerful tool for studying molecular interactions.
- Weak interactions and low concentrations traditionally pose limitations for NMR-based studies.
- Dynamic Nuclear Polarization (DNP) offers significant signal enhancement for NMR.
Purpose of the Study:
- To demonstrate the feasibility of direct Carbon-13 (¹³C) NMR ligand binding studies using DNP.
- To showcase the application of hyperpolarized substrates in enzymatic assays for ligand binding.
- To highlight DNP's potential for developing novel, sensitive in vitro interaction assays.
Main Methods:
- Utilized dynamic nuclear polarization (DNP) to enhance NMR signal sensitivity.
- Performed direct ¹³C NMR ligand binding studies at natural isotopic abundance.
- Employed hyperpolarized substrates in enzymatic assays to assess ligand binding.
Main Results:
- Achieved feasibility for direct ¹³C NMR ligand binding studies at natural abundance.
- Enabled sensitive detection of molecular interactions at sub-micromolar concentrations.
- Demonstrated facile interpretation of NMR screens and quantification via enzymatic assays.
Conclusions:
- DNP significantly enhances NMR sensitivity, overcoming practical limitations in interaction studies.
- This approach facilitates fast, sensitive, and low-material-requirement in vitro experiments.
- Hyperpolarization offers a versatile strategy for studying molecular interactions without synthetic modifications.
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