PreprintCited by 21Protein Structure and DynamicsComputational Drug Discovery MethodsMachine Learning in Bioinformatics

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Predicting improved protein conformations with a temporal deep recurrent neural network

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Preprint — published as 10.1371/journal.pone.0202652 · Paper page

Abstract

Accurate protein structure prediction from amino acid sequence is still an unsolved problem. The most reliable methods centre on template based modelling. However, the accuracy of these models entirely depends on the availability of experimentally resolved homologous template structures. In order to generate more accurate models, extensive physics based molecular dynamics (MD) refinement simulations are performed to sample many different conformations to find improved conformational states. In this study, we propose a deep recurrent network model, called DeepTrajectory, that is able to identify these improved conformational states, with high precision, from a variety of different MD based sampling protocols. The proposed model learns the temporal patterns of features computed from the MD trajectory data in order to classify whether each recorded simulation snapshot is an improved conformational state, decreased conformational state or a none perceivable change in state with respect to the starting conformation. The model is trained and tested on 904 trajectories from 42 different protein systems with a cumulative number of more than 1.7 million snapshots. We show that our model outperforms other state of the art machine-learning algorithms that do not consider temporal dependencies. To our knowledge, DeepTrajectory is the first implementation of a time-dependent deep-learning protocol that is re-trainable and able to adapt to any new MD based sampling procedure, thereby demonstrating how a neural network can be used to learn the latter part of the protein folding funnel.

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Metadata

Authors
Pfeiffenberger, E., & Bates, P. A.
Affiliations
The Francis Crick Institute (GB)
Corresponding author
  • Pfeiffenberger, Erik
  • Bates, Paul A.
Venue
PLoS ONE
Publisher
openRxiv
Published
2018-03-03
Volume
13
Issue
9
Pages
e0202652-e0202652
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2949122381
Cited by
21
References
1
Citations by year
2025: 3 · 2024: 2 · 2023: 1 · 2022: 4 · 2021: 3 · 2020: 4 · 2019: 2 · 2018: 2
FWCI
0.98
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
  • Nvidia
  • Wellcome Trust (FC001003)
  • Francis Crick Institute (10743, 10316, FC001003, 10681)
  • Cancer Research UK (10748, FC001003)
  • Medical Research Council (FC001003)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Drug Discovery › Computational Drug Discovery Methods
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Machine Learning in Bioinformatics
Keywords
protein structure prediction, protein conformational states, molecular dynamics trajectories, deep recurrent neural networks, conformational sampling
MeSH terms
Deep Learning, Algorithms, Amino Acid Sequence, Protein Conformation, Software, Neural Networks, Computer, Protein Folding, Sequence Analysis, Protein, Molecular Dynamics Simulation

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