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About this paper
Keir Adams, Kento Abeywardane, Jenna Fromer, Connor W. Coley
Researchers at MIT developed ShEPhERD, an SE(3)-equivariant diffusion model that jointly generates 3D molecular structures with their shape, electrostatic potential (ESP) surfaces, and directional pharmacophores. The model designed novel molecules that maintained specific interaction profiles for natural product mimicry, bioactive hit diversification, and fragment merging, demonstrating high fidelity in interaction-conditioned generation.
Key insights
- Jointly modeling and diffusing 3D molecular structures with explicit, point-cloud-based interaction profiles in an SE(3)-equivariant framework allows for precise, interaction-aware molecular design.
- The use of separate, explicit point clouds for shape, electrostatic potential, and directional pharmacophores, diffused alongside the molecular graph, provides a comprehensive and flexible representation of intermolecular interactions.
- Conditioning on desired interaction profiles via an inpainting diffusion strategy enables the generation of novel molecules with high 3D similarity to a target, while achieving substantial 2D scaffold hops.
Summary by alphaXiv.
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