【摘要】 在真核细胞基因组中发现一类新内含子———AT AC内含子 ,除结构特征与普遍存在的核mRNA前体内含子有明显不同外 ,剪接机制上也存在一定差异 .文章介绍了该内含子的分布 ,结构特征及剪接机理 ,并与主内含子作了相应比较更多还原

【Abstract】 A new class of introns that possess AT and AC respectively at their 5’ and 3’ ends, has been identified in eukaryotic genome. The AT AC introns differ from the major class of pre mRNA introns both in structural features and in splicing mechanism. The distribution, structural features and splicing mechanism of AT AC introns are discussed and compared with major class of introns.更多还原