Ontology

MOD

PSI-MOD Protein Modifications Ontology

The Proteomics Standards Initiative modification ontology (PSI-MOD) aims to define a concensus nomenclature and ontology reconciling, in a hierarchical representation, the complementary descriptions of residue modifications.

chemical biologychemistrydataplantenzymatic reactionlife sciencelife sciences, biologymoleculenfdi4chem
C56

FAIR 41/48

Version 1.039.0

Evaluated 26 Oct 2026

How scores work

Source & access

Homepagepsidev.info Repositorygithub.com DownloadCanonical file / PURL Browse in OLSEMBL-EBI Ontology Lookup ServiceBrowse in BioPortalNCBO BioPortalBrowse in OBO FoundryOBO Foundry registry

Portals & registries

SourceIDVersionClassesPropertiesIndividualsLoaded
OLS (EMBL-EBI)mod—2,11647025 Oct 2026
TIB Terminology Servicemod—2,09847021 Aug 2023
OBO Dashboardmod—2,116——16 Sept 2026

Ontology IRI http://purl.obolibrary.org/obo/mod.owl
Version IRI http://purl.obolibrary.org/obo/mod/1.039.0/mod.owl

Languages en

Imports from (1)
IAO

Reused by (11)
ADO CCO EUPATH FYPO GEXO GO PCL PR RETO REXO VALUESETS

Logical consistency
consistent · 0 unsatisfiable
OWL 2 DL
no
ROBOT report
254 errors · 1,746 warnings · 274 info
OBO principles
FP01FP02FP03FP04FP05FP06FP07FP08FP09FP11FP12FP16FP20
Axioms
37,820 · 1.02% entities reused

Also registered as
aberowl: PSIMOD bioportal: PSIMOD fairsharing: FAIRsharing.2m4ms9 obofoundry: mod ols: mod ontobee: MOD tib.ts: mod wikidata.entity: Q81661700

Automated evaluation

F Findable FAIR12/12
  • Persistent identifier (F1)purl.obolibrary.org+4
  • Indexed in services (F4)6: OLS, TIB, BioPortal, OBO Foundry, Bioregistry, FAIRsharing+5
  • Citable reference (F2)doi:10.1038/nbt0808-864+3
A Accessible FAIR9/12
  • Homepage reachableHTTP 4040
  • Artefact retrievable over HTTP(S) (A1)download HTTP 200+6
  • Metadata persists in a registry (A2)OBO Foundry, Bioregistry+3
I Interoperable FAIR10/12
  • Formal machine-readable format (I1)OWL, OBO+5
  • Semantic-web IRIs (I2)OWL, OBO+3
  • References other vocabularies (I3)imports 1: iao+2
R Reusable FAIR10/12
  • Clear license (R1.1)CC BY 4.0+5
  • Release provenance (R1.2)1.039.0 (version IRI in the artefact)+4
  • Community standards (R1.3)OBO principles: 5/13 checks pass+1
Q Ontology consistency & quality10/20
  • Logical consistencyconsistent, 0 unsatisfiable classes (OBO Dashboard)+10
  • OWL 2 DL profileoutside OWL 2 DL0
  • Upper-ontology alignmentno BFO/COB/DOLCE import found0
  • Standard relations (RO)does not import the Relation Ontology0
  • ROBOT report: no errors254 errors0
  • ROBOT report: warning density1746 warnings / 2116 classes = 0.830
  • Pitfall scan: no critical pitfallsno pitfall scan yet; ROBOT report has 254 errors0
M Maintenance10/16
  • Recency2026-10-23 → 0.1 months (≤ 3 months)+10
  • Release cadence (12 months)0 releases (GitHub releases)0
U Community adoption5/16
  • Documented adopting projects0 projects0
  • Reused by other ontologies11: ado, cco, eupath, fypo, gexo, go…+3
  • Community signalmax(stars 16 → 1, citations 132 → 2)+2
P Penalties (inactivity & inconsistency)-10
  • Time since last activity0.0 years → 4 × max(0, 0.0 − 1)0
  • Inactive statusnot archived, legacy or inactive0
  • Consistencyconsistent, no unsatisfiable classes0
  • ROBOT report errors254 errors-10

FAIR subtotal 41/48 · earned 66/100 − 10 inactivity = 56/100 → grade C

Community adoption 0

No adopting projects documented yet.

Know a project that uses MOD? Suggest it.

History & changes 1 run

History starts with the first archived run; changes appear after the next evaluation.

RunScoreFAIRVersion evaluatedTermsSnapshot
26 Oct 2026, 03:31 UTC56 C411.039.02,116JSON

Provenance

Every fact on this page was fetched automatically. Each row shows where it came from and when. If a source fails, the last good value is kept and marked “carried forward”.

FactSourceRetrieved
Homepage link check (HTTP 404)psidev.info26 Oct 2026, 03:06 UTC
Repository link check (HTTP 200)github.com26 Oct 2026, 03:06 UTC
Download link check (HTTP 200)purl.obolibrary.org26 Oct 2026, 03:06 UTC
Artefact header (version IRI)raw.githubusercontent.com26 Oct 2026, 03:06 UTC
Git refs (commit e5bf00a, latest tag v1.039.0)github.com26 Oct 2026, 03:06 UTC
GitHub repository statisticsapi.github.com26 Oct 2026, 03:06 UTC
OLS classes, imports, version & releaseebi.ac.uk26 Oct 2026, 03:06 UTC
OBO Foundry status, license & usagesobofoundry.org26 Oct 2026, 02:37 UTC
TIB Terminology Service metricsservice.tib.eu26 Oct 2026, 03:06 UTC
Bioregistry mappings, dependencies & reusebioregistry.io26 Oct 2026, 03:06 UTC
OBO Dashboard (checked 16 Sept 2026)dashboard.obofoundry.org26 Oct 2026, 02:37 UTC
Crossref citations (doi:10.1038/nbt0808-864)api.crossref.org26 Oct 2026, 03:06 UTC

Run 2026-10-26T02-37-38Z · evaluator v2.0.0 · rubric v3.4 · entry.json · run snapshot

How to cite