Immunogen sequence: DEEGKEDGRE EGKEDPEKGA LTTQDENGQT KRKLQAGKKS QDKQKKRQRD RMVERIQFVC SLCKYRTFYE DEMASHLDSK FHKEHFKYVG TKLPKQTAD Highest antigen sequence identity to the following orthologs: Mouse - 92%, Rat - 93%. Could play a role in constitutive trans