Immunogen sequence: MDADSDVALD ILITNVVCVF RTRCHLNLRK IALEGANVIY KRDVGKVLMK LRKPRITATI WSSGKIICTG ATSEEEAKFG ARRLARSLQK LGFQVIFTDF KVVNVLAVCN MPFEIRLPEF TKNNRPHASY EPELHPAVCY RIKSLRATLQ IFSTGSITVT GPNVKAVATA VEQIYPFVFE SRKEIL. Initiation of transcription