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EnvZ是大肠杆菌K-12的一种跨膜环境传感器,可在体外被磷酸化。

EnvZ, a transmembrane environmental sensor of Escherichia coli K-12, is phosphorylated in vitro.

作者信息

Igo M M, Silhavy T J

机构信息

Department of Molecular Biology, Princeton University, New Jersey 08544.

出版信息

J Bacteriol. 1988 Dec;170(12):5971-3. doi: 10.1128/jb.170.12.5971-5973.1988.

DOI:10.1128/jb.170.12.5971-5973.1988
PMID:3056929
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC211718/
Abstract

By fusing the transcriptional and translational start signals of lacZ to envZ, we have obtained high-level synthesis of a truncated EnvZ protein (EnvZ115) in which the first 38 amino acids of EnvZ are replaced with the first 8 amino acids of LacZ. Using this construct, we have partially purified the EnvZ115 protein and demonstrated that this protein can be phosphorylated in vitro. We suggest that phosphorylation may be an important feature of EnvZ function.

摘要

通过将lacZ的转录和翻译起始信号与envZ融合,我们获得了截短的EnvZ蛋白(EnvZ115)的高水平合成,其中EnvZ的前38个氨基酸被LacZ的前8个氨基酸所取代。利用这个构建体,我们部分纯化了EnvZ115蛋白,并证明该蛋白在体外可以被磷酸化。我们认为磷酸化可能是EnvZ功能的一个重要特征。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20dd/211718/5291d05b198b/jbacter00190-0580-d.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20dd/211718/d86369bbbbb7/jbacter00190-0580-a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20dd/211718/3de0a3c06373/jbacter00190-0580-b.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20dd/211718/0a6a436ff632/jbacter00190-0580-c.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20dd/211718/5291d05b198b/jbacter00190-0580-d.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20dd/211718/d86369bbbbb7/jbacter00190-0580-a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20dd/211718/3de0a3c06373/jbacter00190-0580-b.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20dd/211718/0a6a436ff632/jbacter00190-0580-c.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20dd/211718/5291d05b198b/jbacter00190-0580-d.jpg

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Type IV pilins regulate their own expression via direct intramembrane interactions with the sensor kinase PilS.IV型菌毛蛋白通过与传感激酶PilS的直接膜内相互作用来调节自身表达。
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