A catalytically active group II intron domain 5 can function in the U12-dependent spliceosome.

A catalytically active group II intron domain 5 can function in the U12-dependent spliceosome.
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具有催化活性的 II 组内含子结构域 5 可以在 U12 依赖性剪接体中发挥作用。

DOI:
10.1016/s1097-2765(02)00505-1
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发表时间:
2002
期刊:
影响因子:
16
通讯作者:
Padgett,RichardA
Padgett,RichardA
中科院分区:
生物学1区
文献类型:
--
作者:
Shukla,GirishC;Padgett,RichardA

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Both spliceosomal and self-splicing group II introns require the function of similar small, metal binding RNA stem-loop elements located in U6 or U6atac snRNAs of the spliceosome or domain 5 (D5) of group II introns. Here we report that two different D5 elements can functionally replace the U6atac snRNA stem-loop in an in vivo splicing assay. For efficient function in vivo, a single base pair from the upper helical section of the D5 sequence had to be removed. Introducing the equivalent base pair deletion into the D5 element of a group II intron reduced but did not eliminate self-splicing activity. Our results strengthen the case that these RNA elements play similar roles in the catalytic centers of both the spliceosome and a self-splicing ribozyme.
U6 snRNA的分子内茎环结构可以在功能上替代U6atac snRNA茎环。
DOI: --
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