Small integral membrane protein 22 MAVSTEELEA TVQEVLGRLK SHQFFQSTWD TVAFIVFLTF MGTVLLLLLL VVAHCCCCSS PGPRRESPRK VSPWKVSPAG LWDLHGTVLG VEAEGEGSGG KGAHPPREQR ANLLGPAVLL VQERPKGVDN LALEP