The Cleavage Atlas collects proteolytic cleavage sites observed in public mass-spectrometry proteomics data (PRIDE/ProteomeXchange). Each identifier names a single peptide bond in a UniProtKB protein, independent of which protease cleaves it: the UniProtKB accession, an optional isoform number, and the P1 residue position (Schechter-Berger numbering on the full precursor sequence, Met1 = 1). The bond named is the one between residue P1 and residue P1+1.
The accession + P1 key formalises what MEROPS, TopFIND and TermineR already use internally to join cleavage records, so a MEROPS cleavage, a TopFIND cleavage, a UniProt "Site" cleavage feature and an atlas observation map to the same identifier. Unlike those keys it does not include the protease. P1 = 0 and P1 = sequence length are protein termini, not bonds, and are not valid. No isoform suffix means the UniProt canonical isoform.
cleavageatlasA 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 P01009_382 is used to demonstrate the providers
available for Cleavage Atlas. Some providers may use a different example, which is displayed in the table below.
A guide for curating additional providers can be found
here.
| Provider Name | Provider Code | URI |
|---|---|---|
| Cleavage Atlas | cleavageatlas |
https://cleavageatlas.com/site/P01009_382 |
| Bioregistry | bioregistry |
https://bioregistry.io/cleavageatlas:P01009_382 |