Receptor expression-enhancing protein GTLYPAYYSY KAVKSKDIKE YVKWMMYWII FALFTTAETF TDIFLCWFPF YYELKIAFVA WLLSPYTKGS SLLYRKFVHP TLSSKEKEID DCLVQAKDRS YDALVHFGKR GLNVAATAAV MAASKVARLF HFIFSLDLRE GQGQGALSER LRSFSMQDLT TIRGDGAPAP SGPPPPGSGR ASGKHGQPKM SRSASESASS SVCTCCSTCR TWKVVEGDVN EGGMKAWEPH QVQNPLAFSD DEEEDLLDFM YKYKAPRRME LPLEAPPRIL RSRFRKKSTS SSATETT