Protein Data Bank
From Just Solve the File Format Problem
There is also an XML-based variant of PDB format, named PDBML.
Specifications
- current official documentation here
- Old format specifications from 1992: https://web.archive.org/web/20151027211820/http://www.rcsb.org/pdb/file_formats/pdb/pdbguide2.2/PDB_format_1992.pdf
- Version 2.2 specs from 1996: https://web.archive.org/web/20151027211820/https://www.rcsb.org/pdb/file_formats/pdb/pdbguide2.2/pdb_contents_guide2.2.pdf