Membrane spanning 4-domains A7 MLLQSQTMGV SHSFTPKGIT IPQREKPGHM YQNEDYLQNG LPTETTVLGF GITGSLSIIS GKQSTKPFDL SSLTSNAVSS VTAGAGLFLL ADSMVALRTA SQHCGSEMDY LSSLPYSEYY YPIYEIKDCL LTSVSLTGVL VVMLIFTVLE LLLAAYSSVF WWKQLYSNN