Methods for computer-assisted PROTAC design.

Area of Science:

• Chemical biology
• Drug discovery
• Molecular pharmacology

Background:

• Proximity-induced pharmacology leverages small molecules to induce non-natural protein-protein interactions, leading to targeted cellular responses.
• Proteolysis Targeting Chimeras (PROTACs) are advanced molecules that recruit E3 ligases to degrade target proteins, a key mechanism in targeted protein degradation.
• Traditional PROTAC discovery involves extensive trial-and-error screening of chemical modifications and linker properties.

Approach:

• This chapter reviews computational methods for computer-assisted PROTAC design, focusing on MOE, ICM, and PRosettaC.
• Protocols are detailed for predicting the structures of ternary complexes (E3 ligase-PROTAC-target protein).
• Virtual screening of PROTAC candidate libraries is discussed, alongside troubleshooting advice for rational design.

Key Points:

• Computational tools offer a rational approach to PROTAC design, moving beyond traditional empirical methods.
• Predicting ternary complex structures is crucial for understanding PROTAC mechanism and optimizing molecular interactions.
• Virtual screening accelerates the identification of potential PROTAC candidates, reducing experimental workload.

Conclusions:

• Rational PROTAC design, though nascent, holds significant promise for advancing targeted protein degradation therapies.
• The computational methods discussed aim to accelerate the discovery and optimization of novel PROTACs.
• This work encourages broader engagement with computational tools to foster innovation in the field.