No. 17
Spring 2003

Front Page

Message from the PDB

PDB Deposition Statistics

PDB Annotation Manual Online in PDF and PostScript Formats

PDB Focus: ADIT Annotators

New Features Available for Beta Testing: Biological Unit, Curated (Beta) mmCIF Files, Redundancy Reduction Cluster Data

New Features on the Structure Explorer Pages of the PDB Web Site: Author and Ligand Searches, BioMagResBank Links

PDB Focus: Redundancy Reduction Capability

PDB Focus: Maintaining a Local PDB FTP Mirror Site

PDB Focus: Weekly Updates to the PDB

PDB Web Site Statistics

Structural Bioinformatics Book Includes Chapters on the PDB

PDB Paper Published in Nucleic Acids Research

New Distribution Procedure for Protein Data Bank CD-ROM Sets

PDB at the Biophysical Society Meeting

PDB Focus: David Goodsell and the Molecule of the Month

PDB Molecules of the Quarter: Serum Albumin, Potassium Channels, and lac Repressor

PDB Education Corner

Related Links: Education

PDB Job Listings

PDB Members & Statement of Support


© 2003 PDB


PDB Focus: Redundancy Reduction Capability

A subset of structures from which homologous sequences have been largely removed can be obtained from the result list of a query. This option--which is activated by selecting the "remove sequence homologs" option on SearchLite, SearchFields, and the PDB home page-- filters subsets of structures that match a particular query. The default threshold for sequence similarity removal for queries from the home page or SearchLite is 90%; SearchFields provides the option of selecting 50, 70, or 90% similarity as cut-off values. Users can toggle between the complete set of results and the reduced subset by using the options menu at the top of the Query Result Browser.

Further information about this feature is available at