I Try to run this script on order to get all the protein named Delta 9 acyl CoA desaturase. library(seqinr) choosebank("swissprot") D9aCd <- query("Delta 9 acyl-CoA desaturase","KD=Delta 9 acyl-CoA desaturase") Nothing happen.... i be glad to know what i do wrong... Thnks [[alternative HTML version deleted]]