Immunogen sequence: HTKSLDIEIP KHIPERVSLV VTETVDAGLF GEGIVESLIH AWEHLLLQPK TKGESANCEK YGKVIPASAV IFGMAVECAE IRRHHRVGIK DIAGIHLPT Highest antigen sequence identity to the following orthologs: Mouse - 92%, Rat - 89%. Substrate recognition component of a SC