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Rectifying AI-generated protein structure ensembles for equilibrium using physics-based computations.

Lisa Otten1, Jeremy M Leung2, Lillian T Chong2

  • 1Department of Biomedical Engineering, Oregon Health & Science University, Portland, Oregon, USA.

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|April 10, 2026
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Summary
This summary is machine-generated.

Artificial intelligence (AI) tools generate diverse protein structure ensembles. A novel computational method harmonizes these diverse AI outputs into a consistent equilibrium ensemble using weighted ensemble (WE) simulations and the RiteWeight (RW) algorithm.

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Area of Science:

  • Computational Biology
  • Structural Biology
  • Artificial Intelligence in Biochemistry

Background:

  • Recent advancements in artificial intelligence (AI) have led to the development of tools capable of generating protein structure ensembles.
  • These AI-generated ensembles often exhibit significant structural diversity and inconsistencies.

Purpose of the Study:

  • To develop and validate a computational method for harmonizing diverse AI-generated protein structure ensembles.
  • To achieve a consistent, atomically-detailed equilibrium ensemble of protein conformations.

Main Methods:

  • Utilized a two-stage physics-based approach combining weighted ensemble (WE) simulations and the RiteWeight (RW) algorithm.
  • AI-generated ensembles were used to seed WE simulations for relaxation toward a steady state.
  • Trajectory segments from WE simulations were reweighted to the steady state using the RW algorithm.

Main Results:

  • Successfully harmonized distinct AI-generated ensembles into a consistent equilibrium description.
  • Demonstrated the effectiveness of the WE-RW approach in reconciling structural variations from different AI tools.
  • Generated an atomically-detailed equilibrium ensemble for unliganded adenylate kinase.

Conclusions:

  • The WE-RW computational path effectively unifies diverse AI protein structure predictions.
  • This method provides a reliable approach to obtain consistent equilibrium ensembles, irrespective of the initial AI tool.
  • Enables a more accurate and unified understanding of protein conformational dynamics.