Immunogen sequence: GDEGTSQTSF ETSNREAAKS QNLPKPLTEF PSPAEQPTCK EIPDLPEEPS QTAEEVVTVA LRCPSGNVLR RRFLKSYSSQ VLFDWMTRIG YHISLYSLST SFPRRPLAVE GGQSLEDIGI TVDTVLILEE KEQTN. Involved in endoplasmic reticulum-associated degradation (ERAD) for misfolded lumena