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
Merry Christmas and a Happy New Year
Many thanks to all SILVA users for their comments, greetings and criticism. Looking forward to work with you in 2012. The SILVA-Team
ARB SILVA Tutorial at VIZBI 2012
On the VISUALIZING BIOLOGICAL DATA (VIZBI) 2012 conference series in Heidelberg a tutorial about ARB and SILVA will be given by Ralf Westram and Pelin Yilmaz. Please follow the link for details.
Application for EU-US training in Bioinformatics now Open
Sign up for a two week summer school on bioinformatics including an ARB/SILVA module.
Nonredundant SSURef 108 released
The SILVA SSURef 108 NR 99% dataset is now available. More information can be found under Projects.
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.