Aachen’s open data portal lets users search datasets published by the city.
Dataset
SILVA
SILVA provides quality-checked and aligned ribosomal RNA sequence data through datasets, search, and analysis tools.
About SILVA
SILVA provides quality-checked and aligned ribosomal RNA sequence datasets covering small subunit (16S/18S, SSU) and large subunit (23S/28S, LSU) sequences for Bacteria, Archaea and Eukarya. It offers Parc and Ref NR 99 versions with different minimum lengths, basic or strong filtering, and guide-tree availability, with downloads including ARB format.
It also provides search, browser, TestProbe, TestPrime, ACT, SILVAngs, alignment/classification/tree, and NGS classification tools. Release notes state the redesigned curation workflow had not yet been applied to the eukaryotic dataset in the first version of SSU release 144.
Key features
- Aligned SSU 16S/18S sequences for Bacteria, Archaea, Eukarya
- Aligned LSU 23S/28S sequences for three domains of life
- Parc and Ref NR 99 datasets with different quality filtering
- Sequence search, browser and taxonomy navigation tools
- TestProbe and TestPrime for probe and primer evaluation
- Alignment, classification and tree service plus NGS classification
Best for: Researchers working with rRNA sequences for identification, classification and taxonomy.
Good for
- Quality-checked and aligned SSU and LSU rRNA datasets
- Coverage of Bacteria, Archaea and Eukarya
- Multiple search, classification and tree analysis tools
Watch out for
- Redesigned curation workflow had not yet been applied to eukaryotic dataset in release 144
- Ref NR datasets use higher length thresholds that exclude shorter sequences
- Guide trees are available for Ref NR datasets but not Parc datasets
SILVA at a glance
- Official website
- arb-silva.de
- Category
- Research & Data › Open Data in Germany
- Type
- Dataset
- Platforms
- Web
- Language
- English
- Country
- DE
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Similar data sources
Other listings in Open Data in Germany with the most in common.
The Senckenberg data catalog lets visitors search datasets and organizations, with statistics on collections and recent additions.
Dataset
The DeZIM Research Data Center describes datasets and requests information about researchers and their projects before granting access.
Dataset
The Research Data Center Ruhr combines research data management and data services, with regional datasets using standardized area references.
Dataset
RODARE publishes research datasets from the Helmholtz-Zentrum Dresden-Rossendorf, including recent data with open access.
Dataset
Fordatis is Fraunhofer's research data repository, with recent publications including a dataset on wireless signal detection.
Dataset
Popular in Open Data in Germany
Well-known listings from the same topic.
PANGAEApangaea.deMaRDI4NFDI Portalportal.mardi4nfdi.deREPOSITreposit.haw-hamburg.de?locale=enOpen Data Portal city Leipzigopendata.leipzig.deopen.bydataopen.bydata.deNMRshiftDBnmrshiftdb.nmr.uni-koeln.de
SILVA FAQ
What sequence types does SILVA cover?
Aligned small subunit (16S/18S, SSU) and large subunit (23S/28S, LSU) rRNA sequences for Bacteria, Archaea and Eukarya.
What is the difference between Parc and Ref NR datasets?
Parc uses basic filtering, lower length thresholds and no guide tree, while Ref NR 99 uses strong filtering, higher thresholds and includes a guide tree.
In what format can datasets be obtained?
Datasets are made available in ARB format, among others.
Is something wrong or out of date?
Tell us and an editor will check it.
Own this website?
Claim this listing
Claim the listing and suggest updates yourself. An editor checks every claim first.