SILVA
Welcome to the SILVA rRNA database project
A comprehensive on-line resource for quality checked and aligned ribosomal RNA sequence data.
SILVA provides comprehensive, quality checked and regularly updated datasets of aligned small (16S/18S, SSU) and large subunit (23S/28S, LSU) ribosomal RNA (rRNA) sequences for all three domains of life (Bacteria, Archaea and Eukarya).
SILVA are the official databases of the software package ARB.
For more background information 
Click here
ARB
The software package ARB represents a graphically-oriented, fully-integrated package of cooperating software tools for handling and analysis of sequence information.
The ARB project has been started more than 15 years ago by Wolfgang Ludwig at the Technical University in Munich, Germany, see 
www.arb-home.de.
The MEGX.net data portal
Visit our partner site 
www.megx.net, the data portal for Marine Ecological Genomix, to get a feeling how your research can be improved using integrated databases.
Citation
Pruesse, E., C. Quast, K. Knittel, B. Fuchs, W. Ludwig, J. Peplies, and F. O. Glöckner. SILVA: a comprehensive online resource for quality checked and aligned ribosomal RNA sequence data compatible with ARB. Nuc. Acids Res. 2007; Vol. 35, No. 21, p. 7188-7196
SILVA Terms of Use/License Information
SILVA uses a dual licensing model. In short, browsing and deploying the SILVA database content displayed on the SILVA webportal is free for all (academic and non-academic users) whereas all downloads are only free for academic users. Both, academic and non-academic users should have a look at the 
SILVA Terms of Use/License Information for more details.
Partners
Please visit our partners. They facilitate the SILVA database project.
News
Pre-release information for SILVA 111
After quite a long time here is the first pre-release information for SILVA release 111.
SINA (SILVA INcremental Aligner) published
The SINA (SILVA INcremental Aligner) paper has just been published in the journal Bioinformatics.
SILVA heavily cited - Thank You
As published in the last issue of Laborjournal SILVA is one of the most cited papers in the last years. A big "Thank You" to all of you. It is a pleasure to work with such a great community. The SILVA Team.
SILVA release 110 skipped
SILVA release 110 skipped. Preparing now for EMBL release 111. Sorry for any inconveniences. The SILVA Team.
Release information for full release - SILVA 108
| SSU Parc | SSU Ref | LSU Parc | LSU Ref | |||
|---|---|---|---|---|---|---|
| Minimal length | 300 | 1200/900 | 300 | 1900 | ||
| Quality filtering | basic | strong | basic | strong | ||
| Guide Tree | no | yes | no | yes | ||
| Release version | 108 | 108 | 108 | 108 | ||
| Release date | 01.09.11 | 01.09.11 | 01.09.11 | 01.09.11 | ||
| Aligned rRNA sequences | 2,492,653 | 618,442 | 269,240 | 23,600 |
SILVA RSS Feed + ARB & SILVA User Group
- Subscribe to our RSS Feed
to get the latest News. - Stay up to date and follow the discussions of the ARB/SILVA community by subscribing to the Yahoo ARB & SILVA User Group.
Browsing the SILVA webpage
The SILVA website was optimized for Mozilla Firefox 2.0 and higher with at least 1024x768 pixel screen resolution.