Archaeal/eukaryal RNase P: subunits, functions and RNA diversification.

Archaeal/eukaryal RNase P: subunits, functions and RNA diversification.
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DOI:
10.1093/nar/gkq701
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发表时间:
2010-12
影响因子:
14.9
通讯作者:
Gopalan V
Gopalan V
中科院分区:
生物学2区
文献类型:
--
作者:
Jarrous N;Gopalan V

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RNase P是一种催化核糖核蛋白(RNP),以其在前体tRNA加工中的作用而闻名。最近的发现表明,真核RNase P也是转录和加工非编码rna所必需的,因此将RNase P嵌入基因表达所需的复杂机器网络中。此外,RNase P RNA似乎受到基因复制、选择和分化的影响,产生了两个新的催化RNPs, RNase MRP和MRP- tert,它们具有包括细胞周期控制和干细胞生物学在内的新功能。我们提出了关于RNase P RNA功能多样化的新证据和观点,以强调它作为进化可塑性的范例,是RNA驱动的RNPs所发挥的催化和意想不到的调节作用的基础。
RNase P, a catalytic ribonucleoprotein (RNP), is best known for its role in precursor tRNA processing. Recent discoveries have revealed that eukaryal RNase P is also required for transcription and processing of select non-coding RNAs, thus enmeshing RNase P in an intricate network of machineries required for gene expression. Moreover, the RNase P RNA seems to have been subject to gene duplication, selection and divergence to generate two new catalytic RNPs, RNase MRP and MRP-TERT, which perform novel functions encompassing cell cycle control and stem cell biology. We present new evidence and perspectives on the functional diversification of the RNase P RNA to highlight it as a paradigm for the evolutionary plasticity that underlies the extant broad repertoire of catalytic and unexpected regulatory roles played by RNA-driven RNPs.
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