Immunogen sequence: NGKHTFSEVE VFEYLDAVTY SCDPAPGPDP FSLIGESTIY CGDNSVWSRA APECKVVKCR FPVVENGKQI SGFGKKFYYK ATVMFECDKG FYLDGSDTIV CDSNSTWDPP VPKCLK. CD46 (MCP, membrane cofactor protein) is a multifunctional cell surface transmembrane protein that binds