The PurR regulon in Escherichia coli K-12 MG1655.

The PurR regulon in Escherichia coli K-12 MG1655.
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DOI:
10.1093/nar/gkr307
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发表时间:
2011-08
影响因子:
14.9
通讯作者:
Palsson BØ
Palsson BØ
中科院分区:
生物学2区
文献类型:
--
作者:
Cho BK;Federowicz SA;Embree M;Park YS;Kim D;Palsson BØ

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PurR转录因子在肠杆菌嘌呤代谢的转录调控中起关键作用。在这里,我们阐明了在基因组规模的外源性腺嘌呤刺激下PurR的作用,使用高分辨率染色质免疫沉淀(ChIP)芯片和在体内条件下获得的基因表达数据。微阵列数据的分析显示,腺嘌呤刺激导致约10%的大肠杆菌基因的转录水平的变化,包括嘌呤生物合成途径。急诊缺失purR基因的大肠杆菌菌株显示,共有56个基因受到缺失的影响。从ChIP芯片分析,我们确定,超过73%的基因直接调控PurR富集在嘌呤和嘧啶核苷酸的生物合成,利用和运输,其中20%的功能未知。与大肠杆菌中其他转录因子调节子的功能多样性相比,在大肠杆菌中,PurR调节子的功能和大小是有限的。
The PurR transcription factor plays a critical role in transcriptional regulation of purine metabolism in enterobacteria. Here, we elucidate the role of PurR under exogenous adenine stimulation at the genome-scale using high-resolution chromatin immunoprecipitation (ChIP)–chip and gene expression data obtained under in vivo conditions. Analysis of microarray data revealed that adenine stimulation led to changes in transcript level of about 10% of Escherichia coli genes, including the purine biosynthesis pathway. The E. coli strain lacking the purR gene showed that a total of 56 genes are affected by the deletion. From the ChIP–chip analysis, we determined that over 73% of genes directly regulated by PurR were enriched in the biosynthesis, utilization and transport of purine and pyrimidine nucleotides, and 20% of them were functionally unknown. Compared to the functional diversity of the regulon of the other general transcription factors in E. coli, the functions and size of the PurR regulon are limited.
DOI: 10.1038/nbt.1582
发表时间: 2009-11
影响因子: 46.9
作者:
Cho, Byung-Kwan;Zengler, Karsten;Qiu, Yu;Park, Young Seoub;Knight, Eric M.;Barrett, Christian L.;Gao, Yuan;Palsson, Bernhard O.
通讯作者: Palsson, Bernhard O.
DOI: 10.1111/j.1432-1033.1990.tb15314.x
发表时间: 1990-01-26
期刊: EUROPEAN JOURNAL OF BIOCHEMISTRY
影响因子: --
作者:
MENG, LM;KILSTRUP, M;NYGAARD, P
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Karatza, P;Frillingos, S
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DOI: 10.1073/pnas.0807227105
发表时间: 2008-12-09
影响因子: 11.1
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通讯作者: Palsson, Bernhard O.
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发表时间: 1984-01-01
期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子: --
作者:
PIETTE, J;NYUNOYA, H;PIERARD, A
通讯作者: PIERARD, A