glycocoo

is a Ontology.

The Glycoconjugate Ontology (GlycoCoO) is a standard semantic framework for describing and representing glycoproteomics and glycolipidomics data in RDF format. It provides a formal representation of glycoconjugate structures (glycoproteins and glycolipids), their associated metadata including publication information, biological source data, experimental evidence, and abundance ratios. GlycoCoO extends GlycoRDF by creating subclasses of ReferencedCompound including ReferencedGlycoconjugate, ReferencedProtein, and ReferencedLipid, enabling comprehensive annotation of glycan structures attached to proteins and lipids with contextual information such as glycosylation sites, disease associations, tissue and cell line sources, and analytical methods. The ontology supports both complete structural information and compositional data, can represent single glycans or glycoform mixtures at specific sites, and accommodates partially missing site information when no mapping is performed. It has been adopted by major glycoproteomics databases including UniCarbKB, GlyConnect, and GlycoNAVI, enabling federated queries across resources to retrieve integrated information about glycoconjugates from multiple publications and experimental contexts.