T7 RNA polymerase transcription of Escherichia coli isoacceptors tRNALeu

被引：26

作者：

Li, Y ^{[1
]}

Chen, JF ^{[1
]}

Wang, ED ^{[1
]}

Wang, YL ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Biochem, State Key Lab Mol Biol, Shanghai 200031, Peoples R China

来源：

SCIENCE IN CHINA SERIES C-LIFE SCIENCES | 1999年 / 42卷 / 02期

关键词：

isoacceptor tRNA(Leu); T7 RNA polymerase; transcription in vitro;

D O I：

10.1007/BF02880055

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The T7 promoter and the gene encoding tRNA(Leu) were synthesized chemically and cloned into plasmid pUC19, where the gene was transcribed in vitro with T7 RNA polymerase purified. It was found that spermidine had a negative effect on T7 transcription. The amount of transcribed tRNA was about 250 times that of the template DNA under optimal reaction conditions. The unmodified tRNA(1)(Leu) and tRNA(2)(Leu) had similar leucine accepting ability, which however was only one fourth that of the native modified ones. This result indicated that the modified nucleotides of tRNA(Leu) played some though not key roles in its aminoacylation.

引用

页码：185 / 190

页数：6

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