| Function | Description |
| KEGG | Bioconductor annotation data package |
| KEGGENZYMEID2GO | An annotation data file that maps Enzyme Commission numbers to Gene Ontology identifiers |
| KEGGEXTID2PATHID | An annotation data file that maps LocusLink or Open Reading Frame ids KEGG pathway ids |
| KEGGGO2ENZYMEID | An annotation data file that maps Gene Ontology (GO) identifiers to Enzyme Commission numbers |
| KEGGPATHID2EXTID | An annotation data file that maps KEGG pathway ids to LocusLink or Open Reading Frame ids |
| KEGGPATHID2NAME | An annotation data file that maps KEGG pathway identifiers to KEGG pathway names |
| KEGGPATHNAME2ID | An annotation data file that maps KEGG pathway names to identifiers for the corresponding pathway names used by KEGG |
| KEGGQC | Quality control information for KEGG |