Immunogen sequence: IIPSLERLVN AIESKNAEGI FDASLHLKAQ VDQLTGRNEE LRQELRESRK EAINYSQQLA KANLKIDHLE KETSLLRQSE GSNVVFKGID LPDGIAPSSA SII. This gene encodes a protein with 13 putative coiled-coil domains, a region with homology to SMC chromosome segregation