On July 21, 2027: new 4-character PDB IDs (e.g. 1abc) will no longer be issued by the wwPDB.
After that date,
- New entries will be assigned only extended PDB IDs, e.g., pdb_1000abc
- These entries will only be available in PDBx/mmCIF format and will have a new DOI syntax
- The PDB archive will be re-organized based on extended PDB IDs (including file names and directories)
Several resources are available to help users transition, including
- PDB ID Extension FAQ
- PDB Beta Archive Overview: includes beta archive access, scripts, shortlink URLs, and other resources
- PDBx/mmCIF software resources
- Understanding PDBx/mmCIF format
- PDBx/mmCIF User Guide
- PDBx/mmCIF Dictionary
- PDB -> PDBx/mmCIF correspondences
- An online PDBx/mmCIF Editor
Bring your questions to this office hour with Dr. Ezra Peisach to help you become an early adopter of the new PDB Beta Archive, Extended PDB IDs, and PDBx/mmCIF File Format.
This informal event will include a brief demonstration and ample opportunity for Q&A.
Thursday October 22, 2026
noon-1:00pm Eastern | 9:00am - 10am Pacific
Please register for this free event. An institutional email address for registration is preferred.
You will receive confirmation and a Zoom link by email before the event.
Software developers who will need to make updates to code are encouraged to attend.
















