With this week's update, the PDB archive contains 99,928 entries and will soon pass the milestone of 100,000. In the weeks leading up to this event, wwPDB is looking back at other PDB milestones.
![Sequences, and molecules within cogs](/pdbe/sites/ebi.ac.uk.pdbe/files/images/about/News/DandA.png" "Many structures deposited to the PDB today require special tools and processes for data capture and annotation in order to ensure the best representation in the archive.")
To meet the challenges posed by large structures, complex chemistry, and use of multiple experimental methods, the wwPDB is launching a that will allow the partners to meet the evolving needs of the scientific community over the next decade.
Deposit data with the new system at
Since its initial launch at the end of January, more than 750 X-ray crystallographic structures from 30 countries have already been deposited using the new system.
For data depositors, new or enhanced features include the generation of (following the recommendations of the ), improved capture and review of ligand information, the ability to replace coordinate and/or experimental data files pre- and post-submission, improved communication process between depositors and wwPDB curators, and the ability to preview and download the PDBx/mmCIF entry file prior to submission.
For data users, the new annotation system greatly improves the efficiency and consistency of data processing.
The system will eventually replace all current deposition and annotation systems in use at the wwPDB deposition centers.
