The Antibiotic Resistance Ontology (ARO) organizes the information describing the ability of a microorganism to withstand the effects of an antibiotic
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Latest commit d2582a3 Oct 12, 2018


The Antibiotic Resistance Ontology describes antibiotic resistance genes and mutations, their products, mechanisms, and associated phenotypes, as well as antibiotics and their molecular targets. It is integrated with the Comprehensive Antibiotic Resistance Database (, a curated resource containing high quality reference data on the molecular basis of antimicrobial resistance.


Ontologies at the Comprehensive Antibiotic Resistance Database are freely available under the Creative Commons CC-BY license version 4.0


Stable release versions

The latest version of the ontology can always be found at:

(note this will not show up until the request has been approved by

Editors' version

Editors of this ontology should use the edit version, src/ontology/aro-edit.owl


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