Cited by 41Machine Learning in BioinformaticsProtein Structure and DynamicsComputational Drug Discovery Methods

Improving the prediction of protein stability changes upon mutations by geometric learning and a pre-training strategy

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Xu, Yunxin, Liu, Di, Gong, Haipeng·2024·Nature Computational Science

Published version of a preprint

Abstract

Abstract Accurate prediction of the fitness and stability of a protein upon mutations is of high importance in protein engineering and design. Despite the rapid development of deep learning techniques and accumulation of experimental data, the multi-labeled nature of fitness data hinders the training of robust deep-learning-based models for the fitness and stability prediction tasks. Here, we propose three geometric-learning-based models, GeoFitness, GeoDDG and GeoDTm, for the prediction of the fitness score, ΔΔG and ΔTm of a protein upon mutations, respectively. In the optimization of GeoFitness, we designed a novel loss function to allow supervised training of a unified model using the large amount of multi-labeled fitness data in the deep mutational scanning (DMS) database. By this means, GeoFitness efficiently learns the general functional effects of protein mutations and achieves better performance over the other state-of-the-art methods. To further improve the downstream tasks of ΔΔG/ΔTm prediction, we re-utilized the encoder of GeoFitness as a pre-trained module in GeoDDG and GeoDTm to overcome the challenge of lack of sufficient amount of specifically labeled data. This pre-training strategy in combination with data expansion remarkably improves model performance and generalizability. When evaluated on the benchmark test sets (S669 for ΔΔG prediction and a newly collected set S571 for ΔTm prediction), GeoDDG and GeoDTm outperform the other state-of-the-art methods by at least 35% and 70%, respectively, in terms of the Spearman correlation coefficient between predicted and experimental values. An online server for the suite of these three predictors, GeoStab-suite, is available at http://structpred.life.tsinghua.edu.cn/server_geostab.html.

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Authors
Xu, Y., Liu, D., & Gong, H.
Affiliations
Tsinghua University (CN)
Venue
Nature Computational Science
Published
2024-10-25
Volume
4
Issue
11
Pages
840-850
ISSN
2662-8457 (ISSN-L)
OpenAlex
W4403770916
Cited by
41
References
84
Citations by year
2026: 15 · 2025: 21 · 2024: 5
FWCI
5.30
Type
journal article
Language
en
Open access
Locations
  • Nature Computational Science (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • Research Square (acceptedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Natural Science Foundation of China (32171243)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Machine Learning in Bioinformatics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
Keywords
protein stability prediction, point mutations, geometric learning, pre-training, data expansion, labeled data scarcity
MeSH terms
Machine Learning, Algorithms, Mutation, Proteins, Computational Biology, Databases, Protein, Protein Stability

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