History
Please read more about PDB versioning on our help page.
| Version | Date | Type | |
| 1-0 | 1998-02-25 | Initial release | No files available. |
| 1-1 | 2008-03-04 | Version format compliance | No files available. |
| 1-2 | 2011-07-13 | Version format compliance | No files available. |
| 1-3 | 2021-11-03 | Database references, Other | No files available. |
| 1-4 | 2023-08-09 | Refinement description |
