Immunogen sequence: MLVMAPRTVL LLLSAALALT ETWAGSHSMR YFYTSVSRPG RGEPRFISVG YVDDTQFVRF DSDAASPREE PRAPWIEQEG PEYWDRNTQI YKAQAQTDRE; Positive Samples: U-251MG, Jurkat, HepG2, A-549, MCF7; Cellular Location: Membrane, Single-pass type I membrane protein. HL