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 Opens internal link in current windowClick here

SILVAngs

Check out our new service for Next Generation Amplicon data

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 Opens external link in new window 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

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. Opens external link in new windowNucl. Acids Res. 41 (D1): D590-D596.

If you use SINA please cite:

Pruesse, E, Peplies, J and Glöckner, FO (2012) SINA: accurate high-throughput multiple sequence alignment of ribosomal RNA genes. Opens external link in new windowBioinformatics, 28, 1823-1829

Opens internal link in current windowFurther references

SILVA Terms of Use/License Information

SILVA uses a dual licensing model. In short, browsing the content of the SILVA webportal (including results of the data analysis services) and deploying this information is free for all users but Downloads are only free for ACADEMIC users (redistribution of these downloads or their derivates requires a reference to the SILVA license terms). NON-ACADEMIC users please contact us for utilisation of any downloads. More details at SILVA Terms of Use/License Information

SILVA RSS Feed + ARB & SILVA User Group

News

23.07.2015

SILVA 123 released

Done: SILVA 123 is released. Highlights: Improved taxonomy, especially for the Eukaryotes and for LSU Ref. All sequences in SILVA are classified. Exports for Megan. SSU Seed cleanup. SSU Ref and LTP can be selected in all tools on the webpage and much more...


16.06.2015

Sneak preview for SILVA release 123

First statistics about SILVA release 123. Release is expected in July 2015.


03.06.2015

The "All Species Living Tree" version 121 released

The new version of the "All Species Living Tree" based on SILVA release 121 has been released.


15.04.2015

SILVA SSU 119.1 released

The SILVA SSU taxonomy of release 119 has been updated and is now available as 119.1 in our download section.


SILVA SSU / LSU 123 - full release

      SSU Parc SSU Ref SSU Ref NR LSU Parc LSU Ref
Minimal length     300 1200/900 1200/900 300 1900
Quality filtering     basic strong strong basic strong
Guide Tree     no no yes no yes
Release date     23.07.15 23.07.15 23.07.15 23.07.15 23.07.15
Aligned rRNA sequences     4,985,791 1,756,783 597,607 563,332 96,642

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Partners

Please visit our partners. They facilitate the SILVA  database project.