Immunogen sequence: DWELKTQQPL MLKNQLLTLK IKYPHQLDQK VLEKQLPGSM TIQKVKGLLS RLLKVPVSDL LLSYESPKKP GREIELENDL KSLQFYSVEN GDCLLVRW Highest antigen sequence identity to the following orthologs: Mouse - 82%, Rat - 85%. Cofactor E is one of four proteins (cofa