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Applications Of NMR In Biology

Applications Of NMR In Biology

Nuclear magnetic resonance (NMR) spectroscopy is a very valuable analytical technique for researchers. It has been used for more than 50 years as an analytical tool. F. Bloch and E. Purcell formulated NMR in 1946 and won the 1952 Nobel Prize in Physics for their work. Biological macromolecules such as proteins, nucleic acids, lipids, and organic molecules including pharmaceutical compounds, can be studied using this versatile tool that exploits the magnetic properties of certain nuclei.

The Equilibrium Binding Constant and Binding Strength

The Equilibrium Binding Constant and Binding Strength

The equilibrium binding constant (Kb) quantifies the strength of a protein-ligand interaction. Kb can be calculated as follows when the reaction is at equilibrium:

Ligand Binding Sites

Ligand Binding Sites

Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...

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Related Experiment Video

Updated: May 2, 2026

NMR-Based Fragment Screening in a Minimum Sample but Maximum Automation Mode

NMR-Based Fragment Screening in a Minimum Sample but Maximum Automation Mode

Published on: June 4, 2021

Ligand screening using NMR.

Benjamin E Ramirez¹, Aleksandar Antanasijevic, Michael Caffrey

¹Center for Structural Biology, University of Illinois at Chicago, 1100 S. Ashland Ave, Chicago, IL, 60607, USA.

Methods in Molecular Biology (Clifton, N.J.)

|March 5, 2014

Summary

This summary is machine-generated.

Nuclear Magnetic Resonance (NMR) detects how ligands bind to proteins. This study details using the WaterLOGSY NMR experiment to screen for compounds binding to influenza H5 hemagglutinin.

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Area of Science:

Biochemistry
Structural Biology
Chemical Biology

Background:

Nuclear Magnetic Resonance (NMR) is a powerful tool for studying molecular interactions.
Identifying small molecule binders to protein targets is crucial for drug discovery.
Fragment-based screening offers an efficient approach to discover novel ligands.

Purpose of the Study:

To describe NMR-based methods for detecting ligand binding to protein targets.
To detail the application of the WaterLOGSY NMR experiment for fragment screening.
To identify potential binders to influenza H5 hemagglutinin.

Main Methods:

Utilized Nuclear Magnetic Resonance (NMR) spectroscopy.
Employed the WaterLOGSY NMR technique.
Screened a fragment library against influenza H5 hemagglutinin.

Main Results:

Demonstrated the efficacy of NMR for identifying ligand-biomolecule interactions.
Successfully applied WaterLOGSY NMR to screen compound mixtures.
Identified potential binding compounds within the fragment library for the target protein.

Conclusions:

NMR, particularly WaterLOGSY, is effective for fragment-based screening of ligand-protein interactions.
This method facilitates the characterization of binding events.
The approach is applicable to targets like influenza H5 hemagglutinin.