. . "LEFT_TO_RIGHT"^^ . . "TRUNCATION_LEFT__Erb_B4_C_terminal_fragment-RIGHT__Erb_B4_intracellular_fragment-_Erb_B4_transmembrane_fragment-_r16"^^ . . . . . . . . . "TRUNCATION_LEFT__Erb_B4_C_terminal_fragment-RIGHT__Erb_B4_intracellular_fragment-_Erb_B4_transmembrane_fragment-_r16"^^ .