小核核糖核酸
小核RNA（英语：small nuclear RNA，常见缩写为snRNA，也见译为核内小RNA），是含有100到300碱基的RNA。
它参与真核生物细胞核中RNA的加工。snRNA和许多蛋白质结合在一起成为小胞核核糖核蛋白（snRNPs即small nuclear ribonucleoproteins），参与信使RNA前体（pre-mRNA）的剪接，使后者成为成熟mRNA。
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