Immunogen sequence: VKVKHVKRRE KKSEKKKEER YKRHRQKQKH KDKWKHPERA DAKDPASLPQ CLGPGCVRPA QPSSKYCSDD CGMKLAANRI YEILPQRIQQ WQQSPCIAEE HGKKLLERIR REQQSARTRL QEMERRFHEL EAIILRAKQQ. Proteins that contain a CXXC motif within their DNA-binding domain, such as CXX