Immunogen sequence: PCGAELTFEL PDNAKQCFHE EVEQGVKFSL DYQVITGGHY DVDCYVEDPQ GNTIYRETKK QYDSFTYRAE VKGVYQFCFS NEFSTFSHKT VYFDFQVGDE PPILPDMGNR VTALTQMESA CVTIHEALKT VIDSQTHYRL REAQDRARAE DLNSRVS. Potential role in vesicular protein trafficking, mainly in t