[3dem] Time-stamped Copies of PDB and EMDB Archives

[Justin Flatt]

Dear 3DEM community,

A snapshot of the PDB Core archive (https://urldefense.com/v3/__https://files.wwpdb.org__;!!Mih3wA!GIclYOCzI5GSUZqBZh6QK6DyJkmwvpdfy8GJWIlYgqWYvn-PnmoT0x7yhaqOqsvvqEBuwp_j5wrC3ST59FWZTmX0$ , 
https://urldefense.com/v3/__https://s3.rcsb.org__;!!Mih3wA!GIclYOCzI5GSUZqBZh6QK6DyJkmwvpdfy8GJWIlYgqWYvn-PnmoT0x7yhaqOqsvvqEBuwp_j5wrC3ST59L229RcF$ ) as of January 01, 2026 has been added to 
https://urldefense.com/v3/__https://s3snapshots.rcsb.org__;!!Mih3wA!GIclYOCzI5GSUZqBZh6QK6DyJkmwvpdfy8GJWIlYgqWYvn-PnmoT0x7yhaqOqsvvqEBuwp_j5wrC3ST59OnIsl-C$  (AWS), snapshots.rcsb.org (rsync -rlpy -a 
-v --delete snapshots.rcsb.org:: .), and https://urldefense.com/v3/__ftp://snapshots.pdbj.org__;!!Mih3wA!GIclYOCzI5GSUZqBZh6QK6DyJkmwvpdfy8GJWIlYgqWYvn-PnmoT0x7yhaqOqsvvqEBuwp_j5wrC3ST59GLFV4Hv$ . 
Snapshots have been archived annually since 2005 to provide readily 
identifiable data sets for research on the PDB archive.

The directory 20260101 includes the 246,905 experimentally-determined 
structure and experimental data available at that time. Atomic 
coordinate and related metadata are available in PDBx/mmCIF, PDB, and 
XML file formats. The date and time stamp of each file indicates the 
last time the file was modified. The snapshot of PDB Core Archive is 
1,583 GB.

A snapshot of the EMDB Core archive 
(https://urldefense.com/v3/__ftp://ftp.ebi.ac.uk/pub/databases/emdb/__;!!Mih3wA!GIclYOCzI5GSUZqBZh6QK6DyJkmwvpdfy8GJWIlYgqWYvn-PnmoT0x7yhaqOqsvvqEBuwp_j5wrC3ST59K2S4U-M$ ) as of January 01, 2026 can be 
found in https://urldefense.com/v3/__https://ftp.ebi.ac.uk/pub/databases/emdb_vault/20260101/__;!!Mih3wA!GIclYOCzI5GSUZqBZh6QK6DyJkmwvpdfy8GJWIlYgqWYvn-PnmoT0x7yhaqOqsvvqEBuwp_j5wrC3ST59N9vuWvq$  and 
https://urldefense.com/v3/__ftp://snapshots.pdbj.org/20260101/__;!!Mih3wA!GIclYOCzI5GSUZqBZh6QK6DyJkmwvpdfy8GJWIlYgqWYvn-PnmoT0x7yhaqOqsvvqEBuwp_j5wrC3ST59CUgW-Av$ . The snapshot includes 52,943 3DEM 
entries. The Snapshot of the EMDB archive is 28.2 TB in size.

Best wishes,
Justin Flatt on behalf of the wwPDB
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