Sindbis virus. I. Gene order of translation in vivo.

Sindbis virus. I. Gene order of translation in vivo.
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辛德比斯病毒。

DOI:
10.1016/0042-6822(80)90311-6
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发表时间:
1980
期刊:
影响因子:
3.7
通讯作者:
Marcus,PI
Marcus,PI
中科院分区:
医学3区
文献类型:
--
作者:
Fuller,FJ;Marcus,PI

文献摘要

被引文献

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紫外线(uv)辐射被用来绘制辛德毕斯病毒基因体内的排列顺序,并将非结构蛋白分配给特定的RNA互补基团。在辐照细胞中,单个辛德毕斯病毒蛋白的合成失活显示出单次击中动力学。相对于感染性,每种蛋白质(基因)的靶大小与模型一致,其中(i)42 S和26 S多顺反子mRNA的每个分子在单个位点启动蛋白质合成,(ii)翻译不会超过紫外损伤(尿嘧啶二聚体),和(iii)可能需要超过实际切割位点的一些临界量的翻译才能实现切割。Sindbis病毒蛋白质在体内的翻译顺序分别为:5′ ns 66 ns 86-ns 75 3′,非结构蛋白和结构蛋白的翻译顺序分别为:5′ nss-66-ns 86-ns 75和5 ′ capture-E2-E1 3′。辛德毕斯病毒RNA-遗传互补组被分配给非结构蛋白如下:5′ ns 66(G)-ns 86(A)-ns 75(B/F)3′。
Ultraviolet (uv) radiation was used to map the order of translationin vivoof Sindbis virus genes and assign nonstructural proteins to specific RNA−complementation groups. The inactivation of synthesis of individual Sindbis virus proteins in the irradiated cell displayed single-hit kinetics. The target sizes for each protein (gene), relative to infectivity, are consistent with a model in which (i) each molecule of 42 S and 26 S polycistronic mRNA initiates protein synthesis at a single site, (ii) translation does not progress beyond a uvlesion (uracil dimer), and (iii) some critical amount of translation beyond the actual cleavage site may be required to achieve cleavage. A gene order for translation of Sindbis virus proteins, respectively, as: 5′ ns66ns86-ns75 3′in vivowas deduced for nonstructural and structural proteins, respectively, as: 5′ nss-66-ns86-ns75 and5′ capsid-E2-E1 3′. Sindbis virus RNA−genetic complementation groups were assigned to nonstructural proteins as follows: 5′ ns66(G)-ns86(A)-ns75(B/F) 3′.