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 2026-10-01.

The collection at a glance

1,192
Ontologies as KGX
8,285,182
Nodes
16,003,369
Edges
162
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 1,310 ontologies

Transformed1,192Failed87 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 1,192 transformed ontologies

Built142Same as base (no imports)928 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 1,192 of 1,192 ontologies

NamedThing3,962,482
ChemicalEntity714,009
PhysicalEntity422,480
Agent377,836
BiologicalProcessOrActivity350,562
Disease308,498
AnatomicalEntity288,894
Activity269,863
Procedure261,584
InformationContentEntity232,016
OrganismTaxon209,134
Gene193,117
PhenotypicFeature138,558
Attribute115,017
MolecularEntity90,984
Cell66,400
Drug61,812
Protein45,014
MacromolecularComplex43,827
Food26,141
CellularComponent25,680
Polypeptide25,432
SequenceVariant18,752
DiseaseOrPhenotypicFeature8,556
BiologicalEntity7,803
ClinicalFinding6,190
NucleicAcidEntity2,699
Pathway2,624
GeneFamily2,379
EvidenceType2,236
EnvironmentalFeature1,670
MaterialSample1,521
Publication1,423
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 1,169 of 1,192 ontologies

Association16,003,369

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.