A profusion of upstream open reading frame mechanisms in polyamine-responsive translational regulation.

A profusion of upstream open reading frame mechanisms in polyamine-responsive translational regulation.
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DOI:
10.1093/nar/gkp1037
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发表时间:
2010-01
影响因子:
14.9
通讯作者:
Michael AJ
Michael AJ
中科院分区:
生物学2区
文献类型:
--
作者:
Ivanov IP;Atkins JF;Michael AJ

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在许多真核mRNA中,一个或多个短的“上游”开放阅读框uORF位于主要编码序列的起始序列之前。上游ORF在功能上是多样的,如多胺途径生物合成mRNA中它们的各种特征所示。它们作为调节回路的传感器和放大信号的倾向可能解释了它们在大多数多胺途径mRNA中的出现。在多胺途径mRNA中发现的uORF介导的多胺应答性自动调节回路是蛋白质组组分与代谢之间的相互调节的动态界面。
In many eukaryotic mRNAs one or more short ‘upstream’ open reading frames, uORFs, precede the initiator of the main coding sequence. Upstream ORFs are functionally diverse as illustrated by their variety of features in polyamine pathway biosynthetic mRNAs. Their propensity to act as sensors for regulatory circuits and to amplify the signals likely explains their occurrence in most polyamine pathway mRNAs. The uORF-mediated polyamine responsive autoregulatory circuits found in polyamine pathway mRNAs exemplify the translationally regulated dynamic interface between components of the proteome and metabolism.
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