Prototype KG‑aware adaptation of the BioPortal interface. Graph pages generated from live KG‑Registry metadata; tool links go to the live BioPortal.
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Summary

BioPortal ontologies transformed to KGX, alongside the knowledge-graph projects registered in KG‑Registry. Ontologies last transformed on 2026-09-14.

The collection at a glance

1,187
Ontologies as KGX
8,275,892
Nodes
15,965,711
Edges
161
KG projects listed

Node and edge totals cover the base graphs of the transformed ontologies only; each ontology is transformed on its own, so nodes shared between ontologies are counted once per ontology. Full graphs are not summed, since they repeat whatever they import.

Transform status 1,306 ontologies

Transformed1,187Failed88 Skipped23Licensed8

Failed, skipped and license-restricted ontologies are still listed in the browser, each with the reason it has no KGX artifact. Licensed ones are counted apart from failures: they are unavailable by design, not broken.

Full graphs 1,187 transformed ontologies

Built141Same as base (no imports)924 Failed120Skipped2

Every ontology is published as a base graph (its own content, imports stripped) and, where it declares imports, a full graph with the import closure merged in by ROBOT. A full graph fails when an import cannot be fetched; the base graph beside it is unaffected.

8 import-only ontologies, whose base graph is only the ontology header and whose content lives in the full graph: DTO, FDSAJFAHSJK, FNS-H, GEO, OBOE, OCDM, ONTOVIP, SWEET.

Largest ontologies by node count

Largest ontologies by edge count

Node categories across the collection 1,187 of 1,187 ontologies

NamedThing3,954,055
ChemicalEntity714,003
PhysicalEntity423,008
Agent377,836
BiologicalProcessOrActivity350,135
Disease308,445
AnatomicalEntity288,937
Activity269,957
Procedure261,597
InformationContentEntity232,014
OrganismTaxon209,091
Gene193,117
PhenotypicFeature138,558
Attribute114,917
MolecularEntity90,968
Cell66,400
Drug61,812
Protein45,015
MacromolecularComplex43,828
CellularComponent25,680
Polypeptide25,432
Food25,247
SequenceVariant18,752
DiseaseOrPhenotypicFeature8,556
BiologicalEntity7,803
ClinicalFinding6,190
NucleicAcidEntity2,699
Pathway2,624
GeneFamily2,379
EvidenceType2,236
EnvironmentalFeature1,675
MaterialSample1,521
Publication1,415
BiologicalProcess1,225
LifeStage1,054
CellLine169
qualified132
expanded95
starting-point59

An item carrying more than one category is counted under each, so these counts can add up to more than the total. Ontologies last transformed before these counts were recorded contribute nothing to them.

Edge categories across the collection 1,166 of 1,187 ontologies

Association15,965,711

An item carrying more than one category is counted under each, so these counts can add up to more than the total. Ontologies last transformed before these counts were recorded contribute nothing to them.