Immunogen sequence: CRCSQQRREK KFFLLEPQMK VAALRAGAQQ GLSRASAELW TPDSEPTPRP LALVFKPSPL GALELLSPQP LFPYAAD. This gene encodes a transmembrane and secreted protein with characteristics of a type 1a transmembrane protein. It is found in a perinuclear Golgi-l