I'm using the Bioconductor package goseq for GO enrichment in RNASeq data. The package is wonderful and uses a built-in fetching function to automatically get mappings and gene length for the organism of interest. However, it's lacking a GOslim functionality. To implement a gene2goslim mapping it's possible to provide a many-to-many gene-to-goslim dataframe and perform the tests.
My question is: where is it possible to find a mapping between gene identifiers (Entrez ids would be best) and GOslim terms? Something like the mapping in the Bioconductor package org.Hs.egGO2ALLEGS. Also flat files are welcome :-)