| Function | Description |
| vvihomology | Contains data for genes that are homologous to genes in Vitis vinifera |
| vvihomologyDATA | Genes that are Homologous to Vitis vinifera |
| vvihomologyHGID | A vector containing all the HomoloGeneIDs for Vitis vinifera |
| vvihomologyLL2HGID | Mappings between public database ids and NCBI's Internal HomoloGeneIDs for Vitis vinifera |
| vvihomologyORGCODE | A data frame for mappings between organism scientific names, NCBI code, and three-letter short names for various organisms |
| vvihomologyQC | Quality control information for vvihomology |