About RfamΒΆ

The Rfam database is a collection of RNA sequence families of structural RNAs including non-coding RNA genes as well as cis-regulatory elements.

Each family is represented by multiple sequence alignments and covariance models (CMs). You can use the Rfam website to obtain information about an individual family, or browse our families and genome annotations. Alternatively you can download all of the Rfam data from our FTP site.


Take an quick tour of Rfam to find out more about the project.

For each Rfam family we provide:

Summary page
Textual background information on the RNA family, which we obtain from the online encyclopedia Wikipedia
Seed alignment
A curated alignment containing a small set of representative sequences and a consensus secondary structure annotation
Information about sequences in the family, including bit score, seed and full alignments, region coordinates, sequence description from the EMBL nucleotide database, and the species name
Secondary structure
Secondary structure images, annotated with various measures of sequence and structure conservation
Interactive tree graphic displaying species distribution for the full alignment.
Phylogenetic trees are available for the seed and the full alignment
Mappings between PDB structures and Rfam annotations
Database references
Links to external databases and references to other data sources
Covariance model files contain information summarising the family, including the author of alignment, references for sources of sequence and/or structure, the number of sequences in each alignment, score thresholds and score distributions