| Function | Description |
| xlahomology | Contains data for genes that are homologous to genes in Xenopus laevis |
| xlahomologyDATA | Genes that are Homologous to Xenopus laevis |
| xlahomologyHGID | A vector containing all the HomoloGeneIDs for Xenopus laevis |
| xlahomologyLL2HGID | Mappings between public database ids and NCBI's Internal HomoloGeneIDs for Xenopus laevis |
| xlahomologyORGCODE | A data frame for mappings between organism scientific names, NCBI code, and three-letter short names for various organisms |
| xlahomologyQC | Quality control information for xlahomology |