Submit your rRNA sequences for alignment

Sequences will be aligned by SINA (v1.2.9) using the SILVA SEED as reference alignment. The results may be combined with other sequences aligned with our SEED alignment by concatenation of FASTA files or using the ARB MERGE tool.

Find similar sequences (nearest neighbors)

By enabling the search stage, you may request that the respective (SSU or LSU) Parc or Ref dataset be searched for sequences similar to the submitted sequences. The search results will be written to the meta data field "nearest_slv". Once your sequence have been processed, a link on the download page will allow you to add all search results to your cart.

Classify

The search results for each submitted sequence may also be used to derive a LCA (least common ancestor) classification based on any taxonomy available in the SILVA databases (default is our own). The results will be written to the meta data field "lca_tax_<taxonomy-name>".

A detailed tutorial is available in the documentation section.

Submission is currently limited to at most 500 sequences of at most 6000 bases each.

Users from non-academic/commercial environments should have a look at the SILVA License Information