>3F4E_1|Chain A[auth X]|FMN riboswitch|null
GGAUCUUCGGGGCAGGGUGAAAUUCCCGACCGGUGGUAUAGUCCACGAAAGCUU
>3F4E_2|Chain B[auth Y]|FMN riboswitch|null
GCUUUGAUUUGGUGAAAUUCCAAAACCGACAGUAGAGUCUGGAUGAGAGAAGAUUC