>gnl|EMDB+PDB|4740.2 ref_db_acc:6R7G strand_id:R description:polyU RNA UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU