Hello,

I am using reactome.db for over-representive enrichment test, so I wonder how I can get the total gene number for a given species in reactome.db. For example, how many human genes (unique Entrez Ids) are annotated in reactome.db? Is there any simple way to get this number besides counting the shared genes between the annotated genes from "reactomeEXTID2PATHID" and records from "org.Hs.egUNIGENE2EG"? Or retrieve pathways for human in reactome.db, then count the annotated unique genes. Any comment?

I know there is a Reactome Statistics webpage for some species at the Reactome official website, but reactome.db is only updated twice each year, not everyday. I guess the numbers are not accurate for reactome.db .

Thanks

Gilbert

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