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噬菌体T4 58.3至65.5千碱基早期区域的核苷酸序列及分析

Nucleotide sequence and analysis of the 58.3 to 65.5-kb early region of bacteriophage T4.

作者信息

Valerie K, Stevens J, Lynch M, Henderson E E, de Riel J K

出版信息

Nucleic Acids Res. 1986 Nov 11;14(21):8637-54. doi: 10.1093/nar/14.21.8637.

Abstract

The complete 7.2-kb nucleotide sequence from the 58.3 to 65.5-kb early region of bacteriophage T4 has been determined by Maxam and Gilbert sequencing. Computer analysis revealed at least 20 open reading frames (ORFs) within this sequence. All major ORFs are transcribed from the left strand, suggesting that they are expressed early during infection. Among the ORFs, we have identified the ipIII, ipII, denV and tk genes. The ORFs are very tightly spaced, even overlapping in some instances, and when ORF interspacing occurs, promoter-like sequences can be implicated. Several of the sequences preceding the ORFs, in particular those at ipIII, ipII, denV, and orf61.9, can potentially form stable stem-loop structures.

摘要

通过马克萨姆和吉尔伯特测序法确定了噬菌体T4早期区域58.3至65.5kb处完整的7.2kb核苷酸序列。计算机分析显示该序列内至少有20个开放阅读框(ORF)。所有主要的ORF均从左链转录,这表明它们在感染早期表达。在这些ORF中,我们鉴定出了ipIII、ipII、denV和tk基因。这些ORF间隔非常紧密,在某些情况下甚至重叠,当出现ORF间隔时,可能涉及启动子样序列。几个ORF之前的序列,特别是ipIII、ipII、denV和orf61.9处的序列,有可能形成稳定的茎环结构。

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