Mapping Small-Molecule Ligands in Proteins
Author Information
Author(s): Ji Hong-Fang, Kong De-Xin, Shen Liang, Chen Ling-Ling, Ma Bin-Guang, Zhang Hong-Yu
Primary Institution: Shandong Provincial Research Center for Bioinformatic Engineering and Technique, Center for Advanced Study, Shandong University of Technology
Hypothesis
What are the distribution patterns of small-molecule ligands in the protein universe and their implications for the origin of life and drug discovery?
Conclusion
The study reveals that ligand-protein mapping follows a power law, indicating that some ligands are likely to have evolved earliest and have significant implications for drug discovery.
Supporting Evidence
- A few ligands bind to many protein domains, while most bind to only one.
- About 30% of ligands are shared by two or more domains.
- The findings suggest that the chronology of ligand-protein binding can be inferred from the power-law distribution.
Takeaway
This study shows that some small molecules can connect to many proteins, which helps us understand how life began and how we can find new medicines.
Methodology
The study analyzed 2,186 small-molecule ligands and thousands of protein domains from a ligand database to identify binding patterns.
Statistical Information
P-Value
<0.0001
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
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