Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

¹³C NMR: ¹H–¹³C Decoupling01:04

¹³C NMR: ¹H–¹³C Decoupling

1.3K
The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
1.3K
Applications Of NMR In Biology01:25

Applications Of NMR In Biology

4.1K
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.
4.1K
¹H NMR: Complex Splitting01:13

¹H NMR: Complex Splitting

1.5K
A proton M that is coupled to a proton X results in doublet signals for M. However, NMR-active nuclei can be simultaneously coupled to more than one nonequivalent nucleus. When M is coupled to a second proton A, such as in styrene oxide, each peak in the doublet is split into another doublet.
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied...
1.5K
2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)01:19

2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)

1.1K
Heteronuclear single-quantum correlation spectroscopy (HSQC) is a 2D NMR technique that reveals one-bond correlations between hydrogen and a heteronucleus. The HSQC experiment is similar to the heteronuclear correlation experiment (HETCOR) but is more sensitive. In the HSQC spectrum, the proton chemical shift is plotted on the horizontal F2 axis, while the 13C chemical shift is plotted on the vertical F1 axis. The corresponding proton and 13C spectra are also shown. The HSQC contour plot does...
1.1K
Other Nuclides: 31P, 19F, 15N NMR01:16

Other Nuclides: 31P, 19F, 15N NMR

560
Many organic, inorganic, and biological molecules contain spin-half nuclei such as nitrogen-15, fluorine-19, and phosphorus-31. As a result, NMR studies of these nuclei have found extensive applications in chemical and biological research.
While fluorine-19 and phosphorous-31 have high natural abundances (100%) and positive gyromagnetic ratios, nitrogen-15 has a low natural abundance and a negative gyromagnetic ratio. However, nitrogen-15 is still preferred over nitrogen-14 (which has a...
560
Mass Spectrometry: Amine Fragmentation00:55

Mass Spectrometry: Amine Fragmentation

2.0K
Amines can be identified using mass spectroscopy based on their characteristic fragmentation patterns. The molecular ions of amines undergo fragmentation via ⍺-cleavage. The ⍺-cleavage of the carbon-carbon bonds in amines generates an alkyl radical and resonance-stabilized nitrogen-containing cation.
In amines, the number of nitrogen atoms affects the mass of the molecular ion, which is described by the nitrogen rule of mass spectrometry. This rule states that a compound containing a single...
2.0K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The Biosafety Research Road Map: The Search for Evidence to Support Practices in the Laboratory-<i>Shigella</i> spp.

Applied biosafety : journal of the American Biological Safety Association·2023
Same author

Fragment-Based Drug Discovery: Advancing Fragments in the Absence of Crystal Structures.

Cell chemical biology·2018
Same author

Learning from our mistakes: the 'unknown knowns' in fragment screening.

Bioorganic & medicinal chemistry letters·2013
Same author

Segmental vessel sparing during convex growth arrest surgery--a modified technique.

The spine journal : official journal of the North American Spine Society·2007
Same author

Traction radiography performed under general anesthetic: a new technique for assessing idiopathic scoliosis curves.

Spine·2004
Same author

A simple technique for areolar marking.

British journal of plastic surgery·2002

Related Experiment Video

Updated: Nov 8, 2025

NMR-Based Fragment Screening in a Minimum Sample but Maximum Automation Mode
09:19

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

Published on: June 4, 2021

3.6K

Fragment Screening by NMR.

Ben J Davis1

  • 1Vernalis Research, Cambridge, UK. b.davis@vernalis.com.

Methods in Molecular Biology (Clifton, N.J.)
|April 20, 2021
PubMed
Summary
This summary is machine-generated.

This study details using Nuclear Magnetic Resonance (NMR) for fragment-based lead discovery. It focuses on practical 1D proton NMR techniques for screening fragment libraries and identifying low-affinity interactions effectively.

Keywords:
BiophysicsDrug discoveryFBLDFragment screeningFragment-based lead discoveryNMR

More Related Videos

Nano-Differential Scanning Fluorimetry for Screening in Fragment-based Lead Discovery
06:26

Nano-Differential Scanning Fluorimetry for Screening in Fragment-based Lead Discovery

Published on: May 16, 2021

5.2K
The Identification of Sea Lamprey Pheromones Using Bioassay-Guided Fractionation
09:35

The Identification of Sea Lamprey Pheromones Using Bioassay-Guided Fractionation

Published on: July 17, 2018

9.2K

Related Experiment Videos

Last Updated: Nov 8, 2025

NMR-Based Fragment Screening in a Minimum Sample but Maximum Automation Mode
09:19

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

Published on: June 4, 2021

3.6K
Nano-Differential Scanning Fluorimetry for Screening in Fragment-based Lead Discovery
06:26

Nano-Differential Scanning Fluorimetry for Screening in Fragment-based Lead Discovery

Published on: May 16, 2021

5.2K
The Identification of Sea Lamprey Pheromones Using Bioassay-Guided Fractionation
09:35

The Identification of Sea Lamprey Pheromones Using Bioassay-Guided Fractionation

Published on: July 17, 2018

9.2K

Area of Science:

  • Medicinal Chemistry
  • Structural Biology
  • Biophysical Chemistry

Background:

  • Fragment-based lead discovery (FBLD) is a key strategy in drug development.
  • NMR spectroscopy offers a sensitive biophysical method for detecting molecular interactions.

Purpose of the Study:

  • To provide a practical guide for employing NMR in fragment screening campaigns.
  • To highlight the utility of 1D ligand-observed proton NMR experiments for FBLD.
  • To address challenges in identifying weak ligand-target interactions.

Main Methods:

  • Utilizing 1D ligand-observed 1H NMR spectroscopy for fragment screening.
  • Implementing optimized experimental configurations for NMR fragment screening.
  • Applying strategies to mitigate artifacts in NMR-based interaction studies.

Main Results:

  • Demonstrated the practical application of NMR for screening fragment libraries.
  • Detailed the specific advantages and considerations of 1D proton NMR in FBLD.
  • Provided methods to improve the reliability of identifying low-affinity binders.

Conclusions:

  • NMR, particularly 1D ligand-observed 1H NMR, is a powerful and practical tool for FBLD.
  • Careful experimental design and artifact mitigation are crucial for successful fragment screening.
  • This approach facilitates the identification of novel low-affinity interactions for drug discovery.