An analysis of vertebrate mRNA sequences: intimations of translational control.

An analysis of vertebrate mRNA sequences: intimations of translational control.
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DOI:
10.1083/jcb.115.4.887
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发表时间:
1991-11
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Kozak M
Kozak M
中科院分区:
其他
文献类型:
--
作者:
Kozak M

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已经发现mRNA中的五种结构特征有助于真核核糖体启动的保真度和效率。根据这些标准对脊椎动物cDNA序列的仔细检查揭示了一组转录本-编码癌蛋白,生长因子,转录因子和其他调节蛋白-似乎被设计为翻译不良。因此,在翻译水平上的节流可能是脊椎动物基因调控的关键组成部分。另一种解释是,一些(也许是许多)5'端非编码序列受阻的cDNA代表mRNA前体,这意味着在翻译前的转录后步骤中存在广泛的调控。
Five structural features in mRNAs have been found to contribute to the fidelity and efficiency of initiation by eukaryotic ribosomes. Scrutiny of vertebrate cDNA sequences in light of these criteria reveals a set of transcripts--encoding oncoproteins, growth factors, transcription factors, and other regulatory proteins--that seem designed to be translated poorly. Thus, throttling at the level of translation may be a critical component of gene regulation in vertebrates. An alternative interpretation is that some (perhaps many) cDNAs with encumbered 5' noncoding sequences represent mRNA precursors, which would imply extensive regulation at a posttranscriptional step that precedes translation.
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