Modulating the splicing activity of Tetrahymena ribozyme via RNA self-assembly

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Abstract

The internal guiding sequence (IGS) is normally located at the 5′ end of trans-splicing ribozymes that are derived from the Tetrahymena group I intron, and is required for the recognition of substrate RNAs and for trans-splicing reactions. Here, we separated the Tetrahymena group I intron at the L2 loop to produce two fragments: the IGS-containing substrate, and the IGS-lacking ribozyme. We show here that two fragments can complex not through the IGS interaction but under the guidance of appended interacting nucleotides, and perform trans-splicing. The splicing reactions took place both in vitro and in mammalian cells, and the spliced mRNA product from the self-assembled ribozyme complex can be translated into functional proteins in vivo. The splicing efficiency was dependent on the length of appending nucleotides. © 2006 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

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Hasegawa, S., & Rao, J. (2006). Modulating the splicing activity of Tetrahymena ribozyme via RNA self-assembly. FEBS Letters, 580(6), 1592–1596. https://doi.org/10.1016/j.febslet.2006.01.090

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