History
Please read more about PDB versioning on our help page.
| Version | Date | Type | |
| 1-0 | 2007-08-21 | Initial release | No files available. |
| 1-1 | 2011-07-13 | Advisory, Version format compliance | No files available. |
| 1-2 | 2023-08-30 | Data collection, Database references, Refinement description |
