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Drug design using unique conformations to preferentially target a specific site on collagen-bound MMP1
Anthony Nash1, Chase Harms1, Susanta K Sarkar1
1School of Molecular Sciences, Arizona State University, Tempe, AZ.
Biorxiv : the Preprint Server for Biology
|May 25, 2026
Summary
This study introduces a new drug design strategy targeting specific protein conformations induced by substrates. This approach enables the development of precision therapeutics by focusing on dynamic protein states, not just static structures.
Area of Science:
- Biochemistry
- Structural Biology
- Drug Discovery
Background:
- Precise drug design is limited by static protein structures, neglecting crucial dynamics and substrate-specific conformations.
- Understanding protein dynamics and substrate-induced states is key for effective, selective therapeutic targeting.
Purpose of the Study:
- To develop and validate a framework for substrate-specific allosteric drug design.
- To identify and exploit unique protein conformations induced by substrate binding for targeted drug development.
Main Methods:
- Utilized all-atom molecular dynamics (MD) simulations to analyze protein conformational dynamics.
- Employed machine learning for ligand design against substrate-specific allosteric sites.
- Performed surface-wide binding-selectivity screening to ensure target specificity.
Main Results:
- Identified unique conformational states in collagen-bound matrix metalloprotease-1 (MMP1) absent in the free enzyme.
- Designed and screened compounds, finding several that preferentially bind to the substrate-specific allosteric site (R405).
- Achieved preferential binding of at least 0.3 kcal/mol for designed ligands at the target site.
Conclusions:
- Established a generalizable framework for designing ligands that target substrate-specific allosteric sites.
- Demonstrated the potential for selective modulation of protein functions by targeting dynamic, functional states.
- Opened new avenues for precision therapeutics by considering protein dynamics in drug design.
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