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Structure-based drug design by denoising voxel grids

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arxiv 2405.03961 v2 pith:S6NMICM5 submitted 2024-05-07 cs.LG q-bio.BM

classification cs.LGq-bio.BM
keywords moleculesconditionaldenoisinggridsmodelnoisyproteinsample
verification ladder T0 review T1 audit T2 compute T3 formal
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We present VoxBind, a new score-based generative model for 3D molecules conditioned on protein structures. Our approach represents molecules as 3D atomic density grids and leverages a 3D voxel-denoising network for learning and generation. We extend the neural empirical Bayes formalism (Saremi & Hyvarinen, 2019) to the conditional setting and generate structure-conditioned molecules with a two-step procedure: (i) sample noisy molecules from the Gaussian-smoothed conditional distribution with underdamped Langevin MCMC using the learned score function and (ii) estimate clean molecules from the noisy samples with single-step denoising. Compared to the current state of the art, our model is simpler to train, significantly faster to sample from, and achieves better results on extensive in silico benchmarks -- the generated molecules are more diverse, exhibit fewer steric clashes, and bind with higher affinity to protein pockets. The code is available at https://github.com/genentech/voxbind/.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Do we need equivariant models for molecule generation?

    cs.LG 2025-07 conditional novelty 6.0 of 10

    Rotation-augmented CNNs learn equivariance easily for denoising and prediction, but only large models keep generation outputs invariant to seed rotations, and their latent codes do not identify rotated molecules as th...

  2. IBEX: Information-Bottleneck-EXplored Coarse-to-Fine Molecular Generation under Limited Data

    cs.LG 2025-08 conditional novelty 5.0 of 10

    IBEX trains a 3D diffusion model on scaffold-hopping tasks and refines generated poses with a six-degree-of-freedom physics optimization, raising zero-shot docking success from 53% to 64% on CBGBench.

  3. MolFORM: Multi-modal Flow Matching for Structure-Based Drug Design

    cs.CE 2025-07 conditional novelty 5.0 of 10

    A flow-matching model with direct preference optimization fine-tuning generates protein-binding molecules faster than diffusion baselines, with improved docking scores on the CrossDocked2020 benchmark.

  4. Reimagining Target-Aware Molecular Generation through Retrieval-Enhanced Aligned Diffusion

    q-bio.BM 2025-06 conditional novelty 5.0 of 10

    READ couples contrastively aligned latent diffusion with pocket-similarity retrieval to generate 3D ligands, reporting Rank 1 on CBGBench and lower Vina energies than native ligands.

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