[3dem] Big PDB Changes Are One Year Away: Extended PDB IDs, the PDB Beta Archive, and PDBx/mmCIF

[Justin Flatt]

STARTING JULY 21, 2027

  	* The PDB Beta Archive [1] will replace the current PDB main archive 
[2]. The current beta archive URL will point to the main archive 
(details [3]).
  	* PDB entries that have been issued 4-character PDB IDs, including IHM 
structures, will be accessed in this archive using their extended PDB ID 
that prepends "pdb_0000" to the 4-character ID (e.g., 1ABC becomes 
pdb_00001abc).

	* OneDep will only issue 12-character IDs (prefix pdb_ followed by 8 
alphanumeric characters, e.g., pdb_1000axyz).
- New 4-character PDB IDs will not be issued at this point.
- Entries with only 12-character IDs will follow a new DOI syntax. [4]
- Data deposited after July 20, 2027 will only be released in PDBx/mmCIF 
and PDBML formats.
- Legacy PDB formatted files will not be generated for these entries.

The PDB Beta Archive [5] is designed to be scalable and extensible. All 
files in this archive are re-organized using extended PDB IDs (including 
file naming and directories).

All PDB users, including software developers and journal editors, must 
transition to this new archive directory structure, PDBx/mmCIF and 
extended PDB ID format. Start using extended IDs and PDBx/mmCIF data 
files today.

For any further information please contact us at info at wwpdb.org.

Links:
------
[1] https://urldefense.com/v3/__https://files-beta.wwpdb.org/__;!!Mih3wA!E9aQK3VL2IuBUBjwljngkCQuN1tR6wfZjJMNvUAcO56WFKYur8goHzUPFvPpr-L1GglsTvt9NYKpdjav0m5DumkT$ 
[2] https://urldefense.com/v3/__https://files.wwpdb.org/__;!!Mih3wA!E9aQK3VL2IuBUBjwljngkCQuN1tR6wfZjJMNvUAcO56WFKYur8goHzUPFvPpr-L1GglsTvt9NYKpdjav0vGZnaiA$ 
[3] https://urldefense.com/v3/__https://www.wwpdb.org/news/news?year=2026*69ebcdca1103c56d3f444159__;Iw!!Mih3wA!E9aQK3VL2IuBUBjwljngkCQuN1tR6wfZjJMNvUAcO56WFKYur8goHzUPFvPpr-L1GglsTvt9NYKpdjav0hTsNajS$ 
[4] https://urldefense.com/v3/__https://www.wwpdb.org/news/news?year=2026*69ebcf461103c56d3f44415a__;Iw!!Mih3wA!E9aQK3VL2IuBUBjwljngkCQuN1tR6wfZjJMNvUAcO56WFKYur8goHzUPFvPpr-L1GglsTvt9NYKpdjav0mIUXeEp$ 
[5] https://urldefense.com/v3/__https://www.wwpdb.org/ftp/pdb-beta-ftp-sites__;!!Mih3wA!E9aQK3VL2IuBUBjwljngkCQuN1tR6wfZjJMNvUAcO56WFKYur8goHzUPFvPpr-L1GglsTvt9NYKpdjav0sOoltUi$ 
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