Immunogen sequence: LTPAEDNSLS QKKKVTVEDL FSEDFKIHDP EAKWISDTEF IYREQKGTVR LWNVETNTST VLIEGKKIES LRAIRYEISP DREYALFSYN VEPM. DPP6 encodes a single-pass type II membrane protein that is a member of the S9B family in clan SC of the serine proteases. This p