View source for Protein Data Bank

== Specifications ==
* current official documentation [http://www.wwpdb.org/docs.html 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