Immunogen sequence: LFPSPILRAK HFDRLTPEER TKALKKWRGA GKMNQVTSKY ANQSAGKSGR RPMPGPSAVF AMKSASSCAI EQGNLSLCET ALDQGYSETK AFEMAGPS Highest antigen sequence identity to the following orthologs: Mouse - 26%, Rat - 63%. Catalytic component of a P4-ATPase flipp