Starting next week and continuing until the end of the year, the fully processed versions of the PDB Entries currently classified as "Layer 1" will be released. The Layer 1 entries were annotated and processed over the summer by the PDB Processing Team. Following the established procedure, the entries will be released as "modified" structures. These entries will have a REVDAT record with a modification number of 4 to reflect the change from Layer 1 to Layer 2, as was indicated in the last PDB format advisory. In addition, several PDB format records will be included in the REVDAT to further indicate that the file has been brought to Layer 2 status.
The Layer 1 upgrade project was undertaken to ensure the uniformity of the data in the archive, and marks the end of Layer 1 files all together.
Any additional changes to these files can be sent to firstname.lastname@example.org.
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