Immunogen sequence: HGIIGPSHNG AMGGLGSGYG TGLLSANRHS LMVGTHREDG VALRGSHSLL PNQVPVPQLP VQSATSPDLN PPQDPYRGMP PGLQGQSVSS GSSEIKSDDE GDENLQD. TCF4 is transcription factor 4, a basic helix-turn-helix transcription factor. The encoded protein recognizes an Ep