Immunogen sequence: FLQEYVTNKT KKTEELRKTV EDLDGLIQQI YRDQDLTQEI AMEHFVKKVE AAHCAACDLF IPMQFGIIQK HLKTMDHNRN RR Highest antigen sequence identity to the following orthologs: Mouse - 100%, Rat - 99%. Could play a role in constitutive transport element (CTE