History
Please read more about PDB versioning on our help page.
| Version | Date | Type | |
| 1-0 | 2004-05-04 | Initial release | No files available. |
| 1-1 | 2008-04-29 | Version format compliance | No files available. |
| 1-2 | 2011-07-13 | Version format compliance | No files available. |
| 1-3 | 2013-05-22 | Database references | No files available. |
| 1-4 | 2017-10-11 | Refinement description |
