The structure of the 5'-untranslated region of mammalian poly(A) polymerase-alpha mRNA suggests a mechanism of translational regulation.
[No authors listed]
摘要
Poly(A)polymerase-alpha (PAPOLA) has been the most extensively investigated mammalian polyadenylating enzyme, mainly in regard to its multifaceted post-translational regulation. The possibility of translational regulation of this enzyme was addressed. The transcription start site was mapped and two uORFs, highly conserved among several species, were identified in the 211-bp long, GC-rich, of the PAPOLA mRNA. Mutation of the 5' proximal AUG resulted in increased translational efficiency of the adjacent coding sequence, whereas no significant effect was observed after mutation of the second AUG. These observations imply that translational regulation is among the conserved mechanisms regulating PAPOLA expression.
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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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