# CHEBI Integrated Role Ontology (CHIRO)

> CHEBI provides a distinct role hierarchy. Chemicals in the structural hierarchy are connected...

- Page: https://library.schematica.io/model/f1db53d81f714d3391d010202211e686
- Model type: Ontology
- License: CC BY 4.0
- Access type: Free
- Access method: Download
- Model size: Huge
- Formats: OWL
- Domains: Tech / IT
- Audiences: Researcher
- External link: https://bioportal.bioontology.org/ontologies/CHIRO
- Contact: Nicole Vasilevsky (vasilevs@ohsu.edu)
- Listed in library: 2025-06-12
- Last updated: 2025-09-10

## Description

## Ontology Info

| Field | Value |
|-------|-------|
| Acronyme | CHIRO |
| Description | CHEBI provides a distinct role hierarchy. Chemicals in the structural hierarchy are connected via a 'has role' relation. CHIRO provides links from these roles to useful other classes in other ontologies. This will allow direct connection between chemical structures (small molecules, drugs) and what they do. This could be formalized using 'capable of', in the same way Uberon and the Cell Ontology link structures to processes. |
| Format | OWL |
| Categories |  |
| Groups | OBO Foundry |

## Metrics

| Metric | Value |
|--------|-------|
| Classes | 13,286 |
| Individuals | 0 |
| Properties | 15 |
| Max Depth | 2 |
| Max Child Count | 399 |
| Average Child Count | 3 |
| Classes With One Child | 1,789 |
| Classes With More Than 25 Children | 27 |
| Classes With No Definition | 1,629 |

## Projects using CHIRO

No projects using CHIRO

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Source: https://library.schematica.io/model/f1db53d81f714d3391d010202211e686