Protein Data Bank Markup Language (PDBML) provides a representation of PDB data in XML
The description of this format is provided in XML schema of the PDB Exchange Data Dictionary.
This schema is produced by direct translation of the mmCIF format PDB Exchange Data Dictionary.
Other data dictionaries used by the PDB have been electronically translated into XML/XSD schemas.
Further information and related resources are available at http://pdbml.pdb.org/.