The Ribosomal Database Project (RDP-II): sequences and tools for high-throughput rRNA analysis

Nucleic Acids Res. 2005 Jan 1;33(Database issue):D294-6. doi: 10.1093/nar/gki038.


The Ribosomal Database Project (RDP-II) provides the research community with aligned and annotated rRNA gene sequences, along with analysis services and a phylogenetically consistent taxonomic framework for these data. Updated monthly, these services are made available through the RDP-II website ( RDP-II release 9.21 (August 2004) contains 101,632 bacterial small subunit rRNA gene sequences in aligned and annotated format. High-throughput tools for initial taxonomic placement, identification of related sequences, probe and primer testing, data navigation and subalignment download are provided. The RDP-II email address for questions or comments is

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • DNA Probes
  • DNA, Ribosomal / chemistry*
  • DNA, Ribosomal / classification
  • Databases, Nucleic Acid*
  • Genes, rRNA*
  • RNA, Bacterial / genetics
  • RNA, Ribosomal / chemistry
  • RNA, Ribosomal / classification
  • Sequence Alignment
  • Sequence Analysis, DNA*
  • Software*


  • DNA Probes
  • DNA, Ribosomal
  • RNA, Bacterial
  • RNA, Ribosomal