How are PepTivator Peptide Pools designed?

We use the entries in the UniProt database (http://www.uniprot.org) as reference. Some proteins naturally exist in several isoforms, and we generally use isoform 1 in UniProt/ the isoform named “canonical” sequence as described in UniProt for the PepTivator Peptide Pool. Exceptions thereof are clearly indicated in the data sheet.