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(名词解析)

5S rRNAgene (5S rRNA基因)

正确答案

是核糖体大亚基的一个组份,原核生物和真核生物都有5SrRNA,而且结构相似。真核生物的5SrRNA基因与其它三种rRNA基因不在同一条染色体上,它是由核仁以外的染色体基因转录的,然后运输到核仁内参与核糖体的装配。5SrRNA基因是由RNA聚合酶Ⅲ转录的,原初转录物的5'端与成熟的5SrRNA的5'端完全相同。

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