Published January 24, 2018 | Version 1.1
Dataset Open

CryoEM Models and Associated Data Submitted to the 2015/2016 EMDataBank Model Challenge

  • 1. Rutgers University, USA
  • 2. UC Davis, USA
  • 3. Stanford University, USA
  • 4. Lawrence Berkeley Laboratory, USA
  • 5. EMBL-European Bioinformatics Institute, UK
  • 6. University of Cambridge, UK
  • 7. University of Basel, CH
  • 8. Birkbeck College, UK
  • 9. UC Los Angeles, USA
  • 10. Baylor College of Medicine, USA
  • 11. Forschungszentrum Jülich, DE
  • 12. Toyo University, JP
  • 13. National Insititutes of Health, USA
  • 14. Queensland University of Technology, AU
  • 15. University of Washington, USA
  • 16. Inria/CNRS, FR
  • 17. Birbeck College, UK
  • 18. University of Tokyo, JP
  • 19. Purdue University, USA
  • 20. National Institutes of Health, USA
  • 21. University of Illinois Urbana-Champaign, USA
  • 22. tUniversity of Illinois Urbana-Champaign, USAemp
  • 23. Los Alamos National Laboratory, USA


Files and metadata associated with the EMDataBank/Unified Data Resource for 3DEM 2015/2016 Models Challenge hosted at are deposited.

All members of the Scientific Community--at all levels of experience--were invited to participate as Challengers, and/or as Assessors.

Eight recently determined target structures were selected for the challenge. All of the maps were archived in the EM Data Bank (EMDB;

In total 16 Challengers created 106 models and uploaded their results with associated details.  In the zip files, each entry is represented in a folder containing the original deposition upload (deposited_EM.pdb), initial processing at RCSB/Rutgers (deposited_EM_edited.pdb, maxit.cif, maxit.cif.pdb) and final model version evaluated (model-compare.pdb) at UC Davis (

This model challenge was one of two community-wide challenges sponsored by EMDataBank in 2015/2016 to critically evaluate 3DEM methods that are coming into use, with the ultimate goal of developing validation criteria associated with every 3DEM map and map-derived model.



The 2015/2016 Model Challenge was supported by the US National Institutes of Health / National Institute for General Medical Sciences (NIH/NIGMS) Under Grant Number R01 GM079429 to Wah Chiu (PI).


Model Challenge Web Contents Archive.pdf

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Additional details


  • Henderson et al (2012) Outcome of the first electron microscopy validation task force meeting. doi:10.1016/j.str.2011.12.014
  • Lawson et al (2016) EMDataBank unified data resource for 3DEM. doi:10.1093/nar/gkv1126