Immunogen sequence: RKKAENRRERE KQLRASRSTI DLAKHPCNAS MECDKCQRRQ KNRAFCYFCN SVQKLPICAQ CGKTKCMMKS SDCVIKHAGV YSTGLAMVGA ICDFCEAWVC HGRKCLSTHA CACPLTDAEC VECER Highest antigen sequence identity to the following orthologs - mouse 99%, rat 99%. The function