. . "LEFT_TO_RIGHT"^^ . . "TRUNCATION_LEFT__Presenilin-RIGHT__Presenilin_C_terminal_fragment-_Presenilin_N_terminal_fragment-_r44"^^ . . . . . . . . "TRUNCATION_LEFT__Presenilin-RIGHT__Presenilin_C_terminal_fragment-_Presenilin_N_terminal_fragment-_r44"^^ .