Immunogen sequence: KARSVNVKTQ ALSGYRDQFS LEITGPIMPH SLHSLTMLLK SSQSGSFSAV LYPHEPTAVF NICLQMDKVL DMEVVHKELT NCGLHPNTLE QLSQIPLLGK SSLRN Highest antigen sequence identity to the following orthologs: Mouse - 74%, Rat - 29%. DONSON is essential for DNA ampl