Many bioinformatics tasks require converting gene identifiers from one convention to another, or annotating gene identifiers with gene symbol, description, position, etc. Sure, biomaRt does this for you, but users may get tired of remembering biomaRt syntax and hammering Ensembl's servers every time. These tables have basic annotation information from Ensembl Genes for:
Human build 38 (grch38)
Human build 37 (grch37)
Mouse (grcm38)
Rat (rnor6)
Chicken (galgal5)
Worm (wbcel235)
Fly (bdgp6)
Macaque (mmul801)
Where each table contains:
ensgene: Ensembl gene ID
entrez: Entrez gene ID
symbol: Gene symbol
chr: Chromosome
start: Start
end: End
strand: Strand
biotype: Protein coding, pseudogene, mitochondrial tRNA, etc.
description: Full gene name/description
Additionally, there are tx2gene tables that link Ensembl gene IDs to Ensembl transcript IDs.
NOTE, the description above is copied from README of annotables package.
If you are unclear to the data tables, please refer to annotables.