Invertebrate 7SK snRNAs.

Invertebrate 7SK snRNAs.
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DOI:
10.1007/s00239-007-9052-6
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发表时间:
2008-02
影响因子:
3.9
通讯作者:
Benecke, Bernd-Joachim
Benecke, Bernd-Joachim
中科院分区:
生物学3区
文献类型:
--
作者:
Gruber, Andreas R.;Koper-Emde, Dorota;Marz, Manja;Tafer, Hakim;Bernhart, Stephan;Obernosterer, Gregor;Mosig, Axel;Hofacker, Ivo L.;Stadler, Peter F.;Benecke, Bernd-Joachim

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7SK RNA在哺乳动物细胞中是一种高度丰富的非编码RNA,其转录调控功能最近才被阐明。尽管其在脊椎动物中高度保守的序列,但迄今为止,在无脊椎动物物种中发现7SK RNA同源物的所有尝试都失败了。在这里,我们报告相结合的实验和计算的调查,成功地发现7SK RNA在大多数主要的后口门分支和两个原口门:软体动物和环节动物。然而,尽管付出了巨大的努力,在许多可用的蜕皮动物基因组中没有发现任何候选者。额外的序列数据证实了进化上的保守性,从而证实了先前描述的3′和5′茎环基序的功能重要性,并为第三个结构上高度保守的结构域提供了证据。
7SK RNA is a highly abundant noncoding RNA in mammalian cells whose function in transcriptional regulation has only recently been elucidated. Despite its highly conserved sequence throughout vertebrates, all attempts to discover 7SK RNA homologues in invertebrate species have failed so far. Here we report on a combined experimental and computational survey that succeeded in discovering 7SK RNAs in most of the major deuterostome clades and in two protostome phyla: mollusks and annelids. Despite major efforts, no candidates were found in any of the many available ecdysozoan genomes, however. The additional sequence data confirm the evolutionary conservation and hence functional importance of the previously described 3′ and 5′ stem-loop motifs, and provide evidence for a third, structurally well-conserved domain.
DOI: 10.1073/pnas.85.23.8998
发表时间: 1988-12-01
影响因子: 11.1
作者:
FROHMAN, MA;DUSH, MK;MARTIN, GR
通讯作者: MARTIN, GR
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通讯作者: Friedman, R
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影响因子: 5.6
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