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PDB FILE FORMATS, ANNOTATION PROCEDURES, AND REMEDIATION

Regarding recent discussions about the PDB the following notes
are made from the wwPDB partners

* PDB File Formats

Entries in PDB format comply with the PDB Contents Guide v2.3 (July 1998).
Entries in mmCIF format comply with the PDB Exchange Dictionary v1.037
(January 2007).
Entries in XML format comply with the PDBML Schema v1.037 (January 2007).

Documentation for these formats is available at
http://www.wwpdb.org/docs.html

* Annotation Procedures

There are some data items for which the processing procedures are
ambiguous.
Over the course of the last 12 months the annotation teams at the wwPDB 
deposition sites have worked to formalize many aspects of PDB annotation 
policies and procedures. As a result, a consistent set of annotation 
procedures are being defined.

Documentation for annotation procedures and policies is available at
     http://www.wwpdb.org/docs.html

* Remediation

All existing entries have been reviewed and errors have been corrected 
where possible.  One major change is that the atomic names will conform 
to IUPAC standards. In addition, the chemical component dictionary has 
been updated and extended to include more information about the chemical 
structures of each component. The wwPDB Advisory Committee has reviewed 
and approved this effort.

Remediation project information is available at
    http://remediation.wwpdb.org/.

Please consult this site to review test data files and the new dictionary.

The full new data set in PDB, mmCIF and XML formats will become available 
for review in April 2007.

For the wwPDB partners,
 Helen Berman (RCSB PDB)
 Haruki Nakamura (PDBj)
 Kim Henrick  (EBI)
 John Markley (BMRB)




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