Nucleic Acids Research Advance Access first published online on October 18, 2007
This version published online on October 24, 2007
Nucleic Acids Research, doi:10.1093/nar/gkm864
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Computational Biology |
SILVA: a comprehensive online resource for quality checked and aligned ribosomal RNA sequence data compatible with ARB
1Microbial Genomics Group, Max Planck Institute for Marine Microbiology, 2University Bremen, Center for Computing Technologies, D-28359, 3Jacobs University Bremen gGmbH, D-28759, 4Department of Molecular Ecology, Max Planck Institute for Marine Microbiology, D-28359 Bremen, 5Department for Microbiology, Technical University Munich, D-85354 Freising and 6Ribocon GmbH, D-28359 Bremen
*To whom correspondence should be addressed. Tel: +49 421 2028970; Fax: +49 421 2028580; Email: fog{at}mpi-bremen.de
Received May 26, 2007. Revised August 18, 2007. Accepted September 14, 2007.
Sequencing ribosomal RNA (rRNA) genes is currently the method of choice for phylogenetic reconstruction, nucleic acid based detection and quantification of microbial diversity. The ARB software suite with its corresponding rRNA datasets has been accepted by researchers worldwide as a standard tool for large scale rRNA analysis. However, the rapid increase of publicly available rRNA sequence data has recently hampered the maintenance of comprehensive and curated rRNA knowledge databases. A new system, SILVA (from Latin silva, forest), was implemented to provide a central comprehensive web resource for up to date, quality controlled databases of aligned rRNA sequences from the Bacteria, Archaea and Eukarya domains. All sequences are checked for anomalies, carry a rich set of sequence associated contextual information, have multiple taxonomic classifications, and the latest validly described nomenclature. Furthermore, two precompiled sequence datasets compatible with ARB are offered for download on the SILVA website: (i) the reference (Ref) datasets, comprising only high quality, nearly full length sequences suitable for in-depth phylogenetic analysis and probe design and (ii) the comprehensive Parc datasets with all publicly available rRNA sequences longer than 300 nucleotides suitable for biodiversity analyses. The latest publicly available database release 91 (August 2007) hosts 547 521 sequences split into 461 823 small subunit and 85 689 large subunit rRNAs.
The authors wish it to be known that, in their opinion, the first two authors should be regarded as joint First Authors.
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