Accessory function removing invalid values from a query
clean_query(query, df)the input query without the invalid values
list of keys corresponding to UniProt's query fields. For example : list("gene_exact" = c("Pik3r1", "Pik3r2") , "organism" = c("10090", "9606"), "reviewed" = "yes")
data.frame with invalid values (in column "value") and corresponding query field (in column "field").