Immunogen sequence: APNGFKQHGN PHLYHSQGKG SYKHDRVVPQ SRASAQIISS SKSQILAPGE KITGKVKSDN GTGYDTDSSQ DSRDRGNSCD SSSKSRNR Highest antigen sequence identity to the following orthologs: Mouse - 67%, Rat - 66%. Tight junction-associated protein that is involved