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Updated: Apr 26, 2026

Identification of Small Molecule-binding Proteins in a Native Cellular Environment by Live-cell Photoaffinity Labeling
Published on: September 20, 2016
Identification and validation of bioactive small molecule target through phenotypic screening.
1Chemical Genomics National Research Laboratory, Department of Biotechnology, Translational Research Center for Protein Function Control, College of Life Science & Biotechnology, Yonsei University, Seoul 120-749, Republic of Korea.
This study introduces phenotypic screening combined with multi-omics-based target identification and validation (MOTIV) for discovering bioactive small molecules. This approach effectively identifies therapeutic drug targets and their mechanisms of action.
Area of Science:
- Drug Discovery
- Chemical Biology
- Proteomics
Background:
- Systematic screening and target identification are crucial for developing new therapeutic drugs from bioactive small molecules.
- Conventional screening methods may not fully capture the complex cellular effects of small molecules.
- Understanding the holistic impact of small molecules on cellular mechanisms is essential for drug development.
Purpose of the Study:
- To introduce a novel approach combining phenotypic screening with multi-omics-based target identification and validation (MOTIV).
- To demonstrate the effectiveness of this integrated strategy for identifying bioactive small molecules and their protein targets.
- To elucidate the cellular mechanisms underlying the effects of small molecules.
Main Methods:
- Phenotypic screening to observe the visual effects of bioactive small molecules at the cellular or organism level.
- Multi-omics-based target identification and validation (MOTIV) using chemical genomics and proteomics.
- Network analysis and validation of identified target protein candidates.
Main Results:
- Phenotypic screening provides a systems-level view of small molecule effects.
- MOTIV successfully identifies potential target proteins for bioactive small molecules.
- Network analysis and validation confirm biologically relevant targets and cellular mechanisms.
Conclusions:
- The combination of phenotypic screening and MOTIV offers an effective strategy for bioactive small molecule discovery.
- This integrated approach facilitates the identification of novel therapeutic drug candidates.
- It enables a comprehensive understanding of target proteins and their associated cellular mechanisms.
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