核剪接(nuclear splicing)

互联网2013-11-15

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核剪接是指发生在细胞核中，主要是对hnRNA中内含子的剪接。这种剪接有三个主要特点∶一是在pre-mRNA中内含子与外显子间有特征性序列，即GT-AG规则；第二是剪接过程中需要snRNA参与，并要形成剪接体；第三要形成套索结构。

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