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首页> 外文期刊>Journal of Virology >Divergent transcription of early 35- and 94-kilodalton protein genes encoded by the HindIII K genome fragment of the baculovirus Autographa californica nuclear polyhedrosis virus.
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Divergent transcription of early 35- and 94-kilodalton protein genes encoded by the HindIII K genome fragment of the baculovirus Autographa californica nuclear polyhedrosis virus.

机译:由杆菌病毒综述Californica核多面体病毒的HindIII k基因组片段编码的35- kindalton蛋白基因的发散转录。

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The organization of viral genes within the 3.7-kilobase-pair HindIII-K/EcoRI-S region of the Autographa californica nuclear polyhedrosis virus genome (85 to 88 map units) was determined by using a combination of nucleotide sequencing, transcriptional mapping, and in vitro translation of hybrid selected RNA. Two nonoverlapping genes, extending in opposite directions and encoding polypeptides with molecular weights of 35,000 and 94,000 (35K and 94K polypeptides), were identified. Unspliced, messenger-active RNAs were transcribed from both genes early (2 h) after infection. Indicative of immediate-early genes, transcription of the divergent RNAs was unaffected by the protein synthesis inhibitor, cycloheximide. Late in infection, abundant RNAs were transcribed from promoters located at least 2.5 kilobase pairs upstream from the gene encoding the 35K polypeptide. These transcripts completely overlapped both the 35K and 94K polypeptide genes but apparently lacked protein-coding potential, suggesting that the transcripts may play a role in the suppression of early viral gene expression.
机译:通过使用核苷酸测序,转录测绘的组合,通过使用核苷酸测序,转录映射和进入的组合来确定在3.7千碱基 - 对核多面体病毒基因组(85至88个地图单元)内的病毒基因组织。杂交选择的杂种术译。鉴定了两个非植入基因,沿相反方向延伸并编码具有35,000和94,000(35K和94K多肽)的分子量的多肽。感染后早期(2小时)的两种基因转录,杂散活性的RNA被转录。表示立即早期基因,发散RNA的转录不受蛋白质合成抑制剂环己酰亚胺的影响。在感染后期,从位于编码35K多肽的基因上游至少2.5千碱基对的启动子转录丰富的RNA。这些转录物完全重叠了35K和94K多肽基因,但显然缺乏蛋白质编码势,表明转录物可能在抑制早期病毒基因表达中发挥作用。

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