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2019 Model Metrics Challenge

EMDataResource is trying something new and has put together a smaller, shorter-timeline EM model challenge. The deadline for submission of completed models fitted to target maps (2-3 Å resolution range) is May 25  May 28 (3 PM US Eastern). If you are interested in submitting models for this challenge please send us an email (

JSB Special Issue

All of the articles that will appear in the Journal of Structural Biology Special Issue on the CryoEM Map and Model Challenges have now been accepted for publication and are either already online or will shortly appear there, as listed below.  Click here or below for access. Many thanks to all who have contributed!

Revised Map Challenge Maps/Info Now Available by FTP

At the request of several Map Challenge participants we enabled submission of revised maps/info for 2016 Map Challenge entries in the period between mid-October 2017 and mid-January 2018. We offered this so that updated maps could be archived and referenced, e.g. as part of a contribution to the planned journal special issue.

Zenodo Community Created for Archiving Challenge Data and Results

To support the upcoming JSB Journal Special Issue, all of the map challenge files and associated metadata are now archived, with downloadable zip files divided up by benchmark. A PDF containing a compilation of web pages related to the map challenge is also included. To reference particular map entries submitted to the challenge, manuscripts can cite doi:10.5281/zenodo.1120379 along with emcd### identifiers.  UPDATE Jan 25, 2018: All model challenge data are now also archived at


EMDataResource Validation Challenges are supported by NIH National Institute of General Medical Sciences

Please send your challenge questions, comments and feedback to

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