EFI - Enzyme Similarity Tool
This web resource is supported by a Research Resource from the National Institute of General Medical Sciences (R24GM141196-01).
The tools are available without charge or license to both academic and commercial users.
Reorganization of UniProtKB
With the current 2026_02 release, the UniProtKB database is reorganized to include an
expanded number of Reference Proteomes to better capture biodiversity.
This includes the removal of proteins from taxonomically unclassified organisms,
i.e., those without a binomial species name (genus and species). The total number of
accessions in UniProtKB has been reduced from 253,635,358 in the “legacy” 2025_03
release to 149,810,139 in the current 2026_02 release.
We are providing the option to select either the “legacy” 2025_03 database or the
current UniProtKB database (now 2026_02) when generating SSNs. You can select the
database in the “Database” accordion on the pages for the EFI-EST options, the EFI-GNT
tool, and the Taxonomy Tool. We suggest that you compare the SSNs, GNNs, and GNDs
generated from both databases as you explore the information you are seeking.
Because the “legacy” 2025_03 release contains UniProt IDs that are no longer active
on the UniProt web site, we provide the Metadata Tool
that provides access to the node attribute metadata for the UniProt IDs in the
“legacy” 2025_03 release.
Your job results are only retained for a period of 40 days
Your job was completed on 2019-06-20 15:25:03
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