SILVA
Welcome to the SILVA rRNA database project
A comprehensive on-line resource for quality checked and aligned ribosomal RNA sequence data, free for academic use.
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
The SILVA Databases and Tools on this web portal are free for academic use. 
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If you are interested in the usage of SILVA within a non-academic/commercial environment, please send an e-mail to:
contact(at)arb-silva.dePartners
Please visit our partners. They facilitate the SILVA database project.
Browsing the SILVA webpage
The SILVA website was optimized for Mozilla Firefox 2.0 and higher with at least 1024x768 pixel screen resolution.
Latest News
Happy Summer
The SILVA Team wishes you a nice summer break. Stay tuned for new features coming soon.
SILVA 103 released on the website
The website has been updated to release 103. The next full release will be SILVA 104.
Status of the Web database - SILVA 103
| SSU | LSU | |
|---|---|---|
| Release version | 103 | 103 |
| Release date | 01.06.2010 | 01.06.2010 |
| Aligned rRNA sequences | 1,353,677 | 191,164 |
Release information for full release - SILVA 102
| 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 | yes | yes | ||
| Release version | 102 | 102 | 102 | 102 | ||
| Release date | 15.02.10 | 15.02.10 | 15.02.10 | 15.02.10 | ||
| Aligned rRNA sequences | 1,246,462 | 460,783 | 180,344 | 16,966 |
SILVA RSS Feed + ARB & SILVA User Group
- Subscribe to our RSS Feed
to get the latest News (click on the icon in the address field of your browser). - Stay up to date and follow the discussions of the ARB/SILVA community by subscribing to the Yahoo ARB & SILVA User Group.
SILVA is now on Twitter!
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