Hi, I was wondering if it is possible to use biomaRt package with multiple databases and hence datasets. I want to retrieve GO information using ensembl geneIDs. I use the following : attributes=c("ensembl_gene_id","go_biological_process_id","go_cellular _component_id", "go_biological_process_id", "go_biological_process_linkage_type", "go_cellular_component_linkage_type","go_molecular_function_linkage_ty pe"), and filters="ensembl_gene_id", for a "mart" object which uses ensembl database. I would like to see the names of pathways and reactions in which this gene is involved. Could we do so using biomaRt? cheers, Josh