Multiple conformations are a conserved and regulatory feature of the RB1 5' UTR.
Multiple conformations are a conserved and regulatory feature of the RB1 5' UTR.
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DOI:
10.1261/rna.049221.114
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发表时间:
2015-07
期刊:
影响因子:
--
通讯作者:
Laederach A
中科院分区:
文献类型:
--
作者:
Kutchko KM;Sanders W;Ziehr B;Phillips G;Solem A;Halvorsen M;Weeks KM;Moorman N;Laederach A
Folding to a well-defined conformation is essential for the function of structured ribonucleic acids (RNAs) like the ribosome and tRNA. Structured elements in the untranslated regions (UTRs) of specific messenger RNAs (mRNAs) are known to control expression. The importance of unstructured regions adopting multiple conformations, however, is still poorly understood. High-resolution SHAPE-directed Boltzmann suboptimal sampling of the Homo sapiens Retinoblastoma 1 (RB1) 5′ UTR yields three distinct conformations compatible with the experimental data. Private single nucleotide variants (SNVs) identified in two patients with retinoblastoma each collapse the structural ensemble to a single but distinct well-defined conformation. The RB1 5′ UTRs from Bos taurus (cow) and Trichechus manatus latirostris (manatee) are divergent in sequence from H. sapiens (human) yet maintain structural compatibility with high-probability base pairs. SHAPE chemical probing of the cow and manatee RB1 5′ UTRs reveals that they also adopt multiple conformations. Luciferase reporter assays reveal that 5′ UTR mutations alter RB1 expression. In a traditional model of disease, causative SNVs disrupt a key structural element in the RNA. For the subset of patients with heritable retinoblastoma-associated SNVs in the RB1 5′ UTR, the absence of multiple structures is likely causative of the cancer. Our data therefore suggest that selective pressure will favor multiple conformations in eukaryotic UTRs to regulate expression.
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影响因子:
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作者:
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DOI:
10.1073/pnas.1219988110
发表时间:
2013-04-02
影响因子:
11.1
作者:
Hajdin, Christine E.;Bellaousov, Stanislav;Weeks, Kevin M.
通讯作者:
Weeks, Kevin M.