Immunogen sequence: MEFYESAYFI VLIPSIVITV IFLFFWLFMK ETLYDEVLAK QKREQKLIPT KTDKKKAEKK KNKKKEIQNG NLHESDSESV PRDFKLSDAL AVEDDQVAPV; Positive Samples: A-549, A673, HeLa, MCF7; Cellular Location: Endoplasmic reticulum membrane, Single-pass type II membrane