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首页> 外文期刊>Molecular and Cellular Biology >The t-unique coding domain is important to the transformation maintenance function of the simian virus 40 small t antigen.
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The t-unique coding domain is important to the transformation maintenance function of the simian virus 40 small t antigen.

机译:t-独特的编码域对猿猴病毒40小t抗原的转化维持功能很重要。

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The small t antigen (t) of simian virus 40, a 174-amino-acid-containing protein, when present together with the other early viral protein, large T antigen (T), plays an important role in the maintenance of simian virus 40-induced neoplastic phenotype in certain cells. Indeed, each protein functions in a complementary manner in this process. The t coding unit is composed of two segments, a 5' region of 246 nucleotides which is identical to that of the corresponding 5' region of the T coding unit and a 3' segment of 276 nucleotides which is unique. Two mutant, t-encoding genomes, one bearing a missense and the other a nonsense mutation at the same point in the t-unique coding region were constructed in vitro and found to be defective in their ability to dissolve the actin cytoskeleton of rat fibroblasts and to complement T in the growth of mouse fibroblasts in soft agar. Therefore, the unique segment of the t gene encodes a portion of the t molecule which is essential to its transformation maintenance function.
机译:猿猴病毒40的小t抗原(t)是一种含174个氨基酸的蛋白质,与其他早期病毒蛋白大T抗原(T)一起存在时,在维持猿猴病毒40中起着重要作用。诱导的某些细胞的肿瘤表型。实际上,在此过程中,每种蛋白质都以互补的方式起作用。 t编码单元由两个片段组成,一个246个核苷酸的5'区域与该T编码单元的相应5'区域的相同,而一个276个核苷酸的3'区域是唯一的。在体外构建了两个突变的,t编码的基因组,一个在t-唯一编码区的同一点带有一个错义而另一个在无意义的突变,发现它们溶解大鼠成纤维细胞肌动蛋白细胞骨架的能力存在缺陷。在软琼脂中补充小鼠成纤维细胞生长中的T。因此,t基因的独特区段编码了t分子的一部分,这对于其转化维持功能是必不可少的。

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