History
Please read more about PDB versioning on our help page.
| Version | Date | Type | |
| 1-0 | 2009-08-04 | Initial release | No files available. |
| 1-1 | 2011-07-13 | Source and taxonomy, Version format compliance | No files available. |
| 1-2 | 2017-11-01 | Refinement description | No files available. |
| 1-3 | 2021-11-10 | Database references, Derived calculations | No files available. |
| 1-4 | 2023-11-01 | Data collection, Refinement description |
