Ontology Databases & Services

The EBI has developed and maintained a number of biological ontology related databases and services.

Database	Description
ChEBI	Chemical Entities of Biological Interest (ChEBI) is a freely available dictionary of molecular entities focused on ‘small’ chemical compounds.
EFO	The Experimental Factor Ontology (EFO) is an application focused ontology modelling the experimental factors in ArrayExpress.
GO	The Gene Ontology (GO) consortium.
INSDC Species Taxonomy	The taxonomy database of the International Sequence Database Collaboration (INSDC) contains the names of all organisms that are represented in the sequence databases. Can be browsed using EB-Eye and SRS.
OLS	The Ontology Lookup Service (OLS) is a centralised query interface for ontology and controlled vocabulary lookup.
QuickGO	A fast web based viewer for the Gene Ontology data.
SBO	SBO is the Systems Biology Ontologies project, another cornerstone of the BioModels.net effort. The goal of SBO is to develop controlled vocabularies and ontologies tailored specifically for the kinds of problems being faced in Systems Biology, especially in the context of computational modeling.
UniProtKB Taxonomy	The taxonomy database maintained by the UniProt group. It integrates taxonomy data compiled in the NCBI database and data specific to the UniProt Knowledgebase.
UniProtKB-GOA	The UniProtKB-GOA (Gene Ontology Annotation) project aims to provide high-quality Gene Ontology (GO) annotations to proteins in the UniProt Knowledgebase (UniProtKB).