History
Please read more about PDB versioning on our help page.
| Version | Date | Type | |
| 1-0 | 2003-10-23 | Initial release | No files available. |
| 1-1 | 2011-05-08 | Version format compliance | No files available. |
| 1-2 | 2011-07-13 | Version format compliance | No files available. |
| 1-3 | 2017-06-14 | Structure summary | No files available. |
| 1-4 | 2018-01-24 | Data collection, Database references |
