Evolutionary conservation supports ancient origin for Nudt16, a nuclear-localized, RNA-binding, RNA-decapping enzyme.
Evolutionary conservation supports ancient origin for Nudt16, a nuclear-localized, RNA-binding, RNA-decapping enzyme.
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进化保护支持NUDT16的古代来源,NUDT16是一种核局部,RNA结合,消除RNA的酶。
DOI:
10.1093/nar/gkn605
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发表时间:
2008-10
影响因子:
14.9
通讯作者:
Peculis, Brenda A.
中科院分区:
文献类型:
--
作者:
Taylor, Melissa J.;Peculis, Brenda A.
Nudt16p is a nuclear RNA decapping protein initially identified in Xenopus (X29) and known to exist in mammals. Here, we identified putative orthologs in 57 different organisms ranging from humans to Cnidaria (anemone/coral). In vitro analysis demonstrated the insect ortholog can bind RNA and hydrolyze the m7G cap from the 5′-end of RNAs indicating the Nudt16 gene product is functionally conserved across metazoans. This study also identified a closely related paralogous protein, known as Syndesmos, which resulted from a gene duplication that occurred in the tetrapod lineage near the amniote divergence. While vertebrate Nudt16p is a nuclear RNA decapping protein, Syndesmos is associated with the cytoplasmic membrane in tetrapods. Syndesmos is inactive for RNA decapping but retains RNA-binding activity. This structure/function analysis demonstrates evolutionary conservation of the ancient Nudt16 protein suggesting the existence and maintenance of a nuclear RNA degradation pathway in metazoans.
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影响因子:
5.3
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通讯作者:
Sherman, F
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