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
The SILVA ACT service combines alignment, search and classify as well as reconstruction of trees in a single web application.
SILVA ACT is available at: www.arb-silva.de/act
The SILVA Tree Viewer is a web application to browse and query the SILVA guide trees.
A technical preview is available at www.arb-silva.de/treeviewer.
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.
SILVA is a member of the UniEuk project, a community-based project to achieve a universal taxonomic framework for Eukaryotes, focused primarily on protists. UniEuk is integrating information from relevant genetic markers and classical morphology-based data, validated by a comprehensive network of taxonomy experts.
Quast C, Pruesse E, Yilmaz P, Gerken J, Schweer T, Yarza P, Peplies J, Glöckner FO (2013) The SILVA ribosomal RNA gene database project: improved data processing and web-based tools. Nucl. Acids Res. 41 (D1): D590-D596.
For the taxonomic framework:
Yilmaz P, Parfrey LW, Yarza P, Gerken J, Pruesse E, Quast C, Schweer T, Peplies J, Ludwig W, Glöckner FO (2014) The SILVA and "All-species Living Tree Project (LTP)" taxonomic frameworks. Nucl. Acids Res. 42:D643-D648
As of release 138 the SILVA databases, its taxonomy, and all files provided for download are licensed unter Create Commons Attribution 4.0 (CC-BY 4.0).
All data is freely available for academic and commercial use as long as SILVA is credited as original author and a link to the full license is provided.
Releases before SILVA 138 are not affected by the new license. Please refer to the license file provided in each download directory for the license associated with the provided files.
This news provides an overview on the latest developments regrading the SILVA project and its taxonomy.
The SILVA Team wishes you a Merry Christmas & Happy New Year. Many thanks for using SILVA and all your support to improve SILVA and SILVAngs. Looking forward to see you again in 2022.
Main topics: A further Scientific Advisory Board conference of the de.NBI network and ELIXIR-DE, 2nd annual meeting of the de.NBI Industrial Forum, 4th de.NBI Cloud User Meeting, Women in Data Science - Perspectives in Industry and Academia II, ...and much more!
For the last 12 years, SILVA has been hosting 'The All-Species Living Tree' project (LTP). With their newest release (LTP_2020), the LTP team has decided to host the project on their own website. The SILVA team will continue to integrate the LTP taxonomy and classifications into the SILVA releases. We wish the LTP team all the best at their new home.
SILVA is now part of the German Network for Bioinformatics Infrastructure de.NBI.
To evaluate and improve our quality of service we need your feedback. Please help us by participating in this short survey.
SSU Parc |
SSU Ref NR 99 |
LSU Parc |
LSU Ref NR 99 |
||
---|---|---|---|---|---|
Minimal length | 300 | 1200/900 | 300 | 1900 | |
Quality filtering | basic | strong | basic | strong | |
Guide Tree | no | yes | no | yes | |
Release date | 27.08.20 | 27.08.20 | 27.08.20 | 27.08.20 | |
Aligned rRNA sequences | 9,469,124 | 510,508 | 1,312,534 | 95,286 |