The UniProt Reference Clusters (UniRef) provide clustered sets of sequences from the UniProt Knowledgebase (including isoforms) and selected UniParc records in order to obtain complete coverage of the sequence space at several resolutions while hiding redundant sequences (but not their descriptions) from view.

Prefix

uniref

Links

Homepage

Contact

Missing Contact

Pattern for Local Unique Identifiers

Local identifiers in UniRef should match this regular expression:
^UniRef(100|90|50)_([OPQ][0-9][A-Z0-9]{3}[0-9]|[A-NR-Z][0-9]([A-Z][A-Z0-9]{2}[0-9]){1,2}|UPI[A-F0-9]{10})$

Example Local Unique Identifier

UniRef90_P00750   Resolve

Pattern for CURIES

Compact URIs (CURIEs) constructed from UniRef should match this regular expression:
^uniref:UniRef(100|90|50)_([OPQ][0-9][A-Z0-9]{3}[0-9]|[A-NR-Z][0-9]([A-Z][A-Z0-9]{2}[0-9]){1,2}|UPI[A-F0-9]{10})$

Example CURIE

uniref:UniRef90_P00750

The metaregistry provides mappings between the Bioregistry and other registries. There are 3 mappings to external registries for this resource with 3 unique external prefixes.

A provider turns a local unique identifiers from a resource into a URI. Many providers are also resolvable as URLs (i.e., they can be used in a web browser).

The local unique identifier UniRef90_P00750 is used to demonstrate the providers available for UniRef. A guide for curating additional providers can be found here.