Immunogen sequence: STPNQYMVLIK FRAQADADSF YMTCNGRQFN SIEDDVCQLV YVERAEVLKS EDGASLPVMD LTELPKCTVC LERMDESVNG ILTTLCNHSF HSQC Highest antigen sequence identity to the following orthologs - mouse 98%, rat 97%. Negatively regulates MAP kinase activation by