To improve access to experimental data, the TargetDB and PepcDB have been merged into a single resource, TargetTrack.
This was also done to support PSI:Biology and other new structural biology research activities. New data items and enumeration values for target category, sequence type, protein type, and many others have been expanded. Trial-level support for protein complexes, membrane proteins, and cryoEM studies have also been added. Anyone can deposit to and use TargetTrack.
Read the TargetTrack User Documentation available on the Data Deposition Guidelines page.
The TargetTrack schema was largely built off the PepcDB schema. Only one data element was removed (cloneID); the rest of the changes involved the creation of new elements and adding values to enumerated lists. The Summary of Schema Changes section details all the changes that were made from PepcDB to TargetTrack, as well as changes made between TargetTrack schema versions.
We also now fully support targets that are complexes of multiple sequences. You can read about how to define complex targets in the Extensions in Target Definition section. The examples listed show how we can model a complex target, either as a series of sequences OR as a series of references to existing targets. This allows depositors to decide exactly how they want to model a complex target.
Lastly, all TargetTrack schema elements are defined further, with examples, in the TargetTrack Data Definitions section.
TargetDB and PepcDB data were migrated into TargetTrack. Of course, the new schema has new elements that the old one doesn't, so those fields will remain empty. Only targets that are part of the PSI:Biology project will have all of the elements filled.
We will continue to support the current schemas for TargetDB and PepcDB for select activities (such as PSI-2 and non-PSI projects), and TargetTrack will be backwards compatible for these files. However, we encourage active contributors to switch to the new TargetTrack schema since several issues were resolved in this latest version.
Support for this resource is provided by the Protein Structure Initiative:Biology program at NIGMS.
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