Integration of GPCR Modeling with QM for Drug Design: Academic and Industry Collaboration.

This chapter summarizes more than a decade of sustained academic-industry collaboration between Professor Andrea Townsend-Nicholson (University College London) and Dr Alexander Heifetz (formerly Evotec, now Sygnature Discovery). Working together with their research teams, they have developed and applied advanced computational strategies to investigate G protein-coupled receptors (GPCRs) and translate molecular insights directly into structure-based drug design. Central to this work is the Fragment Molecular Orbital (FMO) method, a quantum mechanical approach that enables residue-level decomposition of interaction energies, providing quantitative analysis of receptor stability, ligand binding, and activation. Through a series of studies including GPCR-ligand interaction mapping and characterization of conserved inter-helical networks, as reviewed in this chapter, the collaboration established a unified framework for GPCR-focused molecular design. The methodologies developed through this partnership have been successfully deployed across multiple GPCR discovery programs and now form part of the broader computational chemistry toolkit used in both academia and industry. This collaboration also stands as a model of how long-term partnerships between academia and the pharmaceutical industry can accelerate scientific innovation and deliver practical technologies for drug discovery.