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Drug Discovery: Overview01:26

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Drug discovery is a multifaceted process involving extensive screening, testing, and optimization of lead compounds to identify potential new drugs for therapeutic use. It combines several approaches, including screening large numbers of natural products, chemical modification of known active molecules, identification of new drug targets, and rational design based on biological mechanisms and drug-receptor structure. These approaches are carried out in both academic research laboratories and...
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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.
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Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
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Drug design is a dynamic field that involves discovering and developing new medications based on specific biological targets. This process heavily relies on structure-activity relationships (SAR) and quantitative structure-activity relationships (QSAR) to guide the design and optimization of efficient drugs.
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Updated: Feb 19, 2026

Nano-Differential Scanning Fluorimetry for Screening in Fragment-based Lead Discovery
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Current perspectives in fragment-based lead discovery (FBLD).

Bas Lamoree1, Roderick E Hubbard2,3

  • 1York Structural Biology Laboratory (YSBL), Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K.

Essays in Biochemistry
|November 10, 2017
PubMed
Summary
This summary is machine-generated.

Fragment-based drug discovery is a mature method for identifying drug leads against conventional targets and challenging protein-protein interactions. This approach yields compounds in clinical trials and medicines, and serves as a tool in chemical biology research.

Keywords:
chemical biologydrug discovery and designfragment based lead discovery

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Area of Science:

  • Medicinal Chemistry
  • Chemical Biology
  • Drug Discovery

Background:

  • Fragment-based drug discovery (FBDD) has matured over two decades.
  • FBDD is effective for conventional targets like enzymes (kinases, proteases).
  • Increasing success is seen in targeting challenging protein-protein interactions.

Purpose of the Study:

  • To overview current practices in fragment-based discovery methods.
  • To discuss the impact of FBDD on lead discovery and drug development.
  • To explore emerging applications of FBDD in chemical biology.

Main Methods:

  • Identification of tractable chemical startpoints using fragment screening.
  • Non-covalent modulation of biological molecule activity.
  • Utilizing fragment-derived compounds as chemical probes.

Main Results:

  • Numerous fragment-derived compounds are in clinical trials.
  • Two medicines derived from fragment-based approaches are approved.
  • FBDD provides valuable chemical tools for biological investigation.

Conclusions:

  • Fragment-based discovery is a robust strategy for identifying drug leads.
  • FBDD has demonstrated significant clinical and therapeutic impact.
  • The methodology is expanding into chemical biology applications.