Immunogen sequence: SWRRRQRRLR GASSAEAPDG DKDAPEPLDK VIILSPGISD ATAPAWPPPG EDPGTTPPGH SVPVPATELG STELVTTKTA GPEQQ. Tumor necrosis factor receptor superfamily member 13C (TNFRSF13C), also known as BAFFR, is a protein in humans is encoded by the TNFRSF13C