Cap-dependent, scanning-free translation initiation mechanisms.
[No authors listed]
摘要
Eukaryotic translation initiation is an intricate and multi-step process that includes 43S Pre-Initiation Complex (PIC) assembly, attachment of the PIC to the mRNA, scanning, start codon selection and 60S subunit joining. Translation initiation of most mRNAs involves recognition of a 5'end m7G cap and ribosomal scanning in which the is checked for complementarity with the AUG. There is however an increasing number of mRNAs directing translation initiation that deviate from the predominant mechanism. In this review we summarize the canonical translation initiation process and describe non-canonical mechanisms that are cap-dependent but operate without scanning. In particular we focus on several examples of translation initiation driven either by mRNAs with extremely short 5' leaders or by highly complex that promote ribosome shunting.
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基因功能
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原始数据
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文献解读
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