EMDataResource (EMDR) is a unified global resource for three-dimensional electron microscopy (3DEM) structure data. It supports the archiving and retrieval of research structures and provides information and tools for the 3DEM community. Its searchable collections include entries in the Electron Microscopy Data Bank (EMDB) and coordinate entries associated with the Protein Data Bank (PDB). Users can explore records through general and specialized search options, including searches by coronavirus-related content, terms, and entry status.

Beyond data access, EMDataResource brings together resources that help researchers work with 3DEM structures. These include statistics, a list of software used in electron microscopy, test data, data standards, and validation methods. The site also shares news and information about events, workshops, community challenges, and advisory activities. Through its archive, search tools, technical resources, and community updates, EMDataResource serves researchers and other users seeking access to 3DEM data and related guidance. The site reports more than 62,000 EMDB map entries and over 37,000 PDB coordinate entries as of September 2026.