The divergent U12-type spliceosome is required for pre-mRNA splicing and is essential for development in Drosophila
The divergent U12-type spliceosome is required for pre-mRNA splicing and is essential for development in Drosophila
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DOI：
10.1016/s1097-2765(02)00441-0
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发表时间：
2002-02-01
期刊：
影响因子：
16
通讯作者：
Steitz, JA
中科院分区：
文献类型：
--
作者：
Otake, LR;Scamborova, P;Steitz, JA
A minor class of pre-mRNA introns whose excision requires a spliceosome containing U11, U12, U4atac/U6atac, and U5 snRNPs has been identified in plants, insects, and vertebrates. We have characterized single loci that specify the U6atac and U12 snRNAs of Drosophila melanogaster. P element-mediated disruptions of the U6atac and U12 genes cause lethality during the third instar larval and embryonic stages, respectively, and are rescued by U6atac and U12 transgenes. The P element disruption of U6atac results in excision defects of U12-type introns from several transcripts including an alternative U12- dependent spliced isoform of prospero, a homeodomain protein required for CNS development. Thus, we demonstrate the requirement for the U12 spliceosome in the development of a metazoan organism.
