RNAcentral is an open public resource that offers integrated access to a comprehensive and up-to-date set of ncRNA sequences.
RNAcentral assigns identifiers to distinct ncRNA sequences and automatically updates links between sequences and identifiers maintained by expert databases.
The INSDC databases contain a large number of sequences annotated with non-coding features.
RNAcentral imports all non-coding features found on INSDC entries as individual sequences, including the data submitted to INSDC by the expert databases.
In addition, RNAcentral contains sequences from Rfam seed and full alignments, which also refer to the INSDC accession space.
sequences shorter than 10 nucleotides
sequences with more than 10% of unknown characters (Ns).
Each sequence in RNAcentral is assigned a Unique RNA Sequence identifier (URS). These identifiers are stable and are not expected to change.
The identifiers have the following format:
URS + sequentially assigned hexadecimal number
and can be parsed using this regular expression:
Example identifiers: URS0000000001, URS00000478B7.
To find an RNAcentral identifier for a single sequence, one can use RNAcentral sequence search.
For a large number of sequences, one can:
download a mapping file with correspondences between external database identifiers and RNAcentral ids.
If you run an ncRNA database and would like to join the RNAcentral Consortium, please get in touch.
The RNAcentral data is updated every 3 months, while the user interface and website functionality is continuously updated.
Provisional release dates are available on the public RNAcentral Events calendar.
Explore all RNAcentral training materials to find information about the project as well as exercises, tips, a quiz, and more.
Try reloading the page
Contact us if the problem persists
Make sure your spelling is correct
Example: misspelled terms like
Esherichia (missing "c") won't find any results
Use full species names
Escherichia coli and not
E. coli as your search terms
Make sure to include double quotes in field-specific search using the
field:"field value" format
Read more about query syntax