2023-05-31 : 27215 EMDB map entries, 15627 PDB coordinate entries RCSB PDB | PDBe

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Global resource for 3-Dimensional Electron Microscopy (3DEM) structure data archiving and retrieval, news, events, software tools, data standards, validation methods, and community challenges

Quick link: 2021 Ligand Model Challenge

Recently released EMDB entries


Improved EM validation with Q-score

Starting September 23, wwPDB validation of 3DEM structures for which there is both a model and an EM volume will include the Q-score metric

EM-specific metadata template to help with OneDep depositions

A new time-saving EM-specific template for metadata input is now available at the PDB_EXTRACT website. The template eases the burden of depositing multiple related structures to the wwPDB OneDep System.

New: RNA Virtual Torsion Plot Service

EMDR has a new web service for validation of RNA structures determined using cryo-EM and other experimental methods. RNA adopts complex three-dimensional folding patterns in biology such as ribosomal particles, spliceosomes, RNA viruses, and polymerase complexes.

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