Accelerated cryo-EM structure determination with parallelisation using GPUs in RELION-2

  1. Dari Kimanius
  2. Björn O Forsberg
  3. Sjors HW Scheres  Is a corresponding author
  4. Erik Lindahl  Is a corresponding author
  1. Stockholm University, Sweden
  2. MRC Laboratory of Molecular Biology,, United Kingdom

Abstract

By reaching near-atomic resolution for a wide range of specimens, single-particle cryo-EM structure determination is transforming structural biology. However, the necessary calculations come at increased computational costs, introducing a bottleneck that is currently limiting throughput and the development of new methods. Here, we present an implementation of the RELION image processing software that uses graphics processors (GPUs) to address the most computationally intensive steps of its cryo-EM structure determination workflow. Both image classification and high-resolution refinement have been accelerated more than an order-of-magnitude, and template-based particle selection has been accelerated two orders-of-magnitude on desktop hardware. Memory requirements on GPUs have been reduced to fit widely available hardware, and we show that the use of single precision arithmetic does not adversely affect results. This enables high-resolution cryo-EM structure determination in a matter of days on a single workstation.

Data availability

The following data sets were generated
The following previously published data sets were used
    1. Scheres SH
    (2014) Beta-galactosidase Falcon-II micrographs plus manually selected coordinates by Richard Henderson
    Publicly available at the EBI Electron Microscopy Pilot Image Archive (accession no: EMPIAR-10017).

Article and author information

Author details

  1. Dari Kimanius

    Department of Biochemistry and Biophysics, Science for Life Laboratory,, Stockholm University, Stockholm, Sweden
    Competing interests
    No competing interests declared.
  2. Björn O Forsberg

    Department of Biochemistry and Biophysics, Science for Life Laboratory, Stockholm University, Stockholm, Sweden
    Competing interests
    No competing interests declared.
  3. Sjors HW Scheres

    MRC Laboratory of Molecular Biology,, Cambridge, United Kingdom
    For correspondence
    scheres@mrc-lmb.cam.ac.uk
    Competing interests
    Sjors HW Scheres, Reviewing editor, eLife.
    ORCID icon "This ORCID iD identifies the author of this article:" 0000-0002-0462-6540
  4. Erik Lindahl

    Department of Biochemistry and Biophysics, Science for Life Laboratory,, Stockholm University, Stockholm, Sweden
    For correspondence
    erik.lindahl@dbb.su.se
    Competing interests
    No competing interests declared.
    ORCID icon "This ORCID iD identifies the author of this article:" 0000-0002-2734-2794

Funding

Medical Research Council (MC UP A025 1013)

  • Sjors HW Scheres

Vetenskapsrådet (2013-5901)

  • Erik Lindahl

Horizon 2020 (EINFRA-2015-1-675728)

  • Erik Lindahl

Swedish e-Science Research Centre

  • Erik Lindahl

The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.

Reviewing Editor

  1. Sriram Subramaniam, National Cancer Institute, United States

Version history

  1. Received: June 11, 2016
  2. Accepted: November 14, 2016
  3. Accepted Manuscript published: November 15, 2016 (version 1)
  4. Version of Record published: February 15, 2017 (version 2)

Copyright

© 2016, Kimanius et al.

This article is distributed under the terms of the Creative Commons Attribution License permitting unrestricted use and redistribution provided that the original author and source are credited.

Metrics

  • 10,768
    views
  • 2,109
    downloads
  • 736
    citations

Views, downloads and citations are aggregated across all versions of this paper published by eLife.

Download links

A two-part list of links to download the article, or parts of the article, in various formats.

Downloads (link to download the article as PDF)

Open citations (links to open the citations from this article in various online reference manager services)

Cite this article (links to download the citations from this article in formats compatible with various reference manager tools)

  1. Dari Kimanius
  2. Björn O Forsberg
  3. Sjors HW Scheres
  4. Erik Lindahl
(2016)
Accelerated cryo-EM structure determination with parallelisation using GPUs in RELION-2
eLife 5:e18722.
https://doi.org/10.7554/eLife.18722

Share this article

https://doi.org/10.7554/eLife.18722

Further reading

    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics
    Isabelle Petit-Hartlein, Annelise Vermot ... Franck Fieschi
    Research Article

    NADPH oxidases (NOX) are transmembrane proteins, widely spread in eukaryotes and prokaryotes, that produce reactive oxygen species (ROS). Eukaryotes use the ROS products for innate immune defense and signaling in critical (patho)physiological processes. Despite the recent structures of human NOX isoforms, the activation of electron transfer remains incompletely understood. SpNOX, a homolog from Streptococcus pneumoniae, can serves as a robust model for exploring electron transfers in the NOX family thanks to its constitutive activity. Crystal structures of SpNOX full-length and dehydrogenase (DH) domain constructs are revealed here. The isolated DH domain acts as a flavin reductase, and both constructs use either NADPH or NADH as substrate. Our findings suggest that hydride transfer from NAD(P)H to FAD is the rate-limiting step in electron transfer. We identify significance of F397 in nicotinamide access to flavin isoalloxazine and confirm flavin binding contributions from both DH and Transmembrane (TM) domains. Comparison with related enzymes suggests that distal access to heme may influence the final electron acceptor, while the relative position of DH and TM does not necessarily correlate with activity, contrary to previous suggestions. It rather suggests requirement of an internal rearrangement, within the DH domain, to switch from a resting to an active state. Thus, SpNOX appears to be a good model of active NOX2, which allows us to propose an explanation for NOX2’s requirement for activation.

    1. Cell Biology
    2. Structural Biology and Molecular Biophysics
    Shun Kai Yang, Shintaroh Kubo ... Khanh Huy Bui
    Research Article

    Acetylation of α-tubulin at the lysine 40 residue (αK40) by αTAT1/MEC-17 acetyltransferase modulates microtubule properties and occurs in most eukaryotic cells. Previous literatures suggest that acetylated microtubules are more stable and damage resistant. αK40 acetylation is the only known microtubule luminal post-translational modification site. The luminal location suggests that the modification tunes the lateral interaction of protofilaments inside the microtubule. In this study, we examined the effect of tubulin acetylation on the doublet microtubule (DMT) in the cilia of Tetrahymena thermophila using a combination of cryo-electron microscopy, molecular dynamics, and mass spectrometry. We found that αK40 acetylation exerts a small-scale effect on the DMT structure and stability by influencing the lateral rotational angle. In addition, comparative mass spectrometry revealed a link between αK40 acetylation and phosphorylation in cilia.