Explore ORENZA, a relationnal database of ORphan ENZyme Activities
Orphan enzyme activities are reported activities (EC numbers) that don't have an associated amino acid sequence in the major public databases (see about page for more details).
Click on the buttons below to explore the ORENZA database tables by theme:
Orenza database version: 2026-08
This version is based on data from:
Explorenz: 2026.07,
Brenda: Release 2026.1 (March 2026),
Kegg: Release 119.0, July 1, 2026,
UniprotKB/Swiss-Prot: Release 2026_02 of 10-Jun-2026,
UniprotKB/TrEMBL: Release 2026_02 of 10-Jun-2026,
PDB: Downloaded on 2026-08
This version is based on data from:
Explorenz: 2026.07,
Brenda: Release 2026.1 (March 2026),
Kegg: Release 119.0, July 1, 2026,
UniprotKB/Swiss-Prot: Release 2026_02 of 10-Jun-2026,
UniprotKB/TrEMBL: Release 2026_02 of 10-Jun-2026,
PDB: Downloaded on 2026-08