RCSB PDB Newsletter #20: Lucene Keyword Search Released on the RCSB PDB Web Site

No. 20
Winter 2004


Message from the RCSB PDB

Announcing the Worldwide Protein Data Bank

Downloadable PDB_EXTRACT Makes Deposition Easier

Biological Unit Tutorial Now Available from the RCSB PDB

Ligand Depot--a Small Molecule Information Resource

PDB Focus: Deposition and Release Policies

PDB Deposition Statistics

Lucene Keyword Search Released on the RCSB PDB Web Site

PDB Focus: Redundancy Reduction Cluster Data Available on the PDB FTP Site

PDB Focus: Searching for Experimental Data Files

Updates of mmCIF Files on the RCSB PDB FTP Site

RCSB PDB Web Site Statistics

NIGMS News: PSI-2 and Structural Biology Roadmap RFA

RCSB PDB Article Published in Nucleic Acids Research

New Update Release of CD-ROM Sets

PDB Molecules of the Quarter: Trypsin, Simian Virus 40, and Catabolite Activator Protein

PDB Community Focus: Edward N. Baker

PDB Education Corner by Katherine Kantardjieff

Related Links: FTP Resources

RCSB PDB Job Listings

RCSB PDB Members & Statement of Support

Questions? info@rcsb.org

© 2004 RCSB PDB


Lucene Keyword Search Released on the RCSB PDB Web Site

After a period of beta testing, the Lucene keyword search engine has replaced the previously-used LDAP keyword search engine to support text searches on the RCSB PDB home page, SearchLite, and the "Text Search" field on SearchFields. Lucene uses an index of the remediated mmCIF files to return much more accurate keyword search results.

Lucene supports wildcard searches, phrases, Boolean queries, and offers a spell checker. Options are offered to narrow the scope of the query, for example, to search for author names or PDB IDs; the default is set to search the entire text of the mmCIF file indices. Additionally, partial word and exact word matches are supported; the default is set to perform an exact word match, unless the partial word match option is selected. The home page keyword search will locate exact word matches to a query.

Examples of supported queries can be found on the SearchLite page at www.rcsb.org/pdb/searchlite.html, and additional help can be found at www.rcsb.org/pdb/help-searchlite.html.