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Cheminformatics

Accurate, Interdisciplinary and Transparent Structure-property Understanding with Deep Native Structural Reasoning

Chen Tang, Yizhou Wang

Featured July 13, 2026

Original Paper

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Simply

A new AI model called SciReasoner learns to understand complex science by turning 3D shapes of molecules and crystals into special "structure words," letting it explain *why* things happen, not just *what* will happen.

In depth
The paper introduces SciReasoner, a multimodal scientific foundation model that achieves native structural reasoning by discretizing 3D coordinates, topologies, and periodic connectivities into a unified structure-aware vocabulary. This allows structural tokens to function as addressable evidence units within autoregressive reasoning trajectories, enabling interpretable scientific inference across proteins, small molecules, and inorganic crystals.

Key Takeaways

  • 1
    SciReasoner unifies diverse scientific structures (proteins, molecules, crystals) into a common structure-aware vocabulary, preserving domain-native information.
  • 2
    The model generates explicit, inspectable reasoning trajectories that interleave natural language with structural tokens, allowing claims to be traced back to physical evidence.
  • 3
    SciReasoner achieves state-of-the-art performance on 67 out of 86 benchmarks, demonstrating significant gains in low-homology regimes and tasks requiring structural grounding.

Conceptual Flow

HIGH LEVEL
1
Methodology: How SciReasoner Works

The AI takes science data like molecule shapes, turns them into special 'science words,' and then uses these words to think and explain its answers step-by-step.

Protein Shape
Molecule Recipe
Crystal Pattern
Convert to Special Words
AI-Ready Science Words
AI Thinks & Explains
Answer & Step-by-Step Logic
2
Results: The Impact of SciReasoner

Unlike old AIs that just predict, SciReasoner understands shapes directly and gives clear reasons for its accurate answers, making science more transparent.

Old AI Methods
SciReasoner
Vs.
Just Predictions
Accurate Answers + Clear Reasons