>Xtr-Mir-21_pre
UAGCUUAUCAGACUGAUGUUGACUGUUGGAUGUCAUGGCAACAACAGUCGGUAGGCUGUC
>Xtr-Mir-21_pri
ACAUCUUCAUGGCUGUACCAUCCUGUCGGAUAGCUUAUCAGACUGAUGUUGACUGUUGGAUGUCAUGGCAACAACAGUCGGUAGGCUGUCUGACAUUUUGGUGUCUUUCACGUGACCAAC
>Xtr-Mir-21_loop
GUUGGAUGUCAUGG
>Xtr-Mir-21_5p
UAGCUUAUCAGACUGAUGUUGACU
>Xtr-Mir-21_3p*
CAACAACAGUCGGUAGGCUGUC