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We are pleased to announce the availability of PDB versioning, allowing depositors to update their entries while retaining the same PDB accession code.
From today, July 1st 2019, submission of PDBx/mmCIF format files for crystallographic depositions to the PDB is mandatory.
Our recent update to the wwPDB validation reports provides much clearer validation information for ligands. We now include 2-dimensional diagrams of ligands, highlighting geometric validation criteria and, for structures determined by crystallography, 3-dimensional views of electron density. We also provide calculated electron density map coefficients which were used to generate the analysis in the validation reports.