Immunogen sequence: HTAQIEIVRL DRTMEQIVFP VPSICEFLTK ESKLRIYYTT ERDEQGSKIN DFFLRSEDLF NEMNWQKKLR AQPVLYWCAR NMSFWSSISF NLAVLMNLLV A. Intracellular channel that mediates calcium release from the endoplasmic reticulum following stimulation by inositol 1,4,