| Function | Description |
| hvuhomology | Contains data for genes that are homologous to genes in Hordeum vulgare |
| hvuhomologyDATA | Genes that are Homologous to Hordeum vulgare |
| hvuhomologyHGID | A vector containing all the HomoloGeneIDs for Hordeum vulgare |
| hvuhomologyLL2HGID | Mappings between public database ids and NCBI's Internal HomoloGeneIDs for Hordeum vulgare |
| hvuhomologyORGCODE | A data frame for mappings between organism scientific names, NCBI code, and three-letter short names for various organisms |
| hvuhomologyQC | Quality control information for hvuhomology |