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.
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.
sequences shorter than 10 nucleotides
sequences with more than 10% of unknown characters (Ns).
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.
Explore all RNAcentral training materials to find information about the project as well as exercises, tips, a quiz, and more.