# Ontology of Biological Attributes (OBA)

> A collection of biological attributes (traits) covering all kingdoms of life. Interoperable with...

- Page: https://library.schematica.io/model/705c52b3ab404fa4b7322e912f22491b
- Model type: Ontology
- License: CC BY 4.0
- Access type: Free
- Access method: Download
- Model size: Huge
- Formats: OWL
- Domains: Healthcare
- External link: https://bioportal.bioontology.org/ontologies/OBA
- Contact: Chris Mungall (cjmungall@lbl.gov)
- Listed in library: 2025-06-12
- Last updated: 2025-09-10

## Description

## Ontology Info

| Field | Value |
|-------|-------|
| Acronyme | OBA |
| Description | A collection of biological attributes (traits) covering all kingdoms of life. Interoperable with VT (vertebrate trait ontology) and TO (plant trait ontology). Extends PATO. |
| Format | OWL |
| Categories | Phenotype |
| Groups | OBO Foundry |

## Metrics

| Metric | Value |
|--------|-------|
| Classes | 72,730 |
| Individuals | 19 |
| Properties | 365 |
| Max Depth | 38 |
| Max Child Count | 8,919 |
| Average Child Count | 5 |
| Classes With One Child | 9,935 |
| Classes With More Than 25 Children | 286 |
| Classes With No Definition | 26,905 |

## Projects using OBA

No projects using OBA

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Source: https://library.schematica.io/model/705c52b3ab404fa4b7322e912f22491b