Regulation of the Alkane Hydroxylase CYP153 Gene in a Gram-Positive   Alkane-Degrading Bacterium, Dietzia sp Strain DQ12-45-1b

doi:10.1128/AEM.02811-15

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	Regulation of the Alkane Hydroxylase CYP153 Gene in a Gram-Positive Alkane-Degrading Bacterium, Dietzia sp Strain DQ12-45-1b
	Liang, Jie-Liang ; JiangYang, Jing-Hong ; Nie, Yong ; Wu, Xiao-Lei
刊名	APPLIED AND ENVIRONMENTAL MICROBIOLOGY
	2016
关键词	PSEUDOMONAS-OLEOVORANS MYCOBACTERIUM-TUBERCULOSIS TRANSCRIPTIONAL REGULATOR METHANE MONOOXYGENASE ESCHERICHIA-COLI GENOME SEQUENCE DEGRADATION OIL ENVIRONMENTS EXPRESSION
DOI	10.1128/AEM.02811-15
英文摘要	CYP153, one of the most common medium-chain n-alkane hydroxylases belonging to the cytochrome P450 superfamily, is widely expressed in n-alkane-degrading bacteria. CYP153 is also thought to cooperate with AlkB in degrading various n-alkanes. However, the mechanisms regulating the expression of the protein remain largely unknown. In this paper, we studied CYP153 gene transcription regulation by the potential AraC family regulator (CypR) located upstream of the CYP153 gene cluster in a broad-spectrum n-alkane-degrading Gram-positive bacterium, Dietzia sp. strain DQ12-45-1b. We first identified the transcriptional start site and the promoter of the CYP153 gene cluster. Sequence alignment of upstream regions of CYP153 gene clusters revealed high conservation in the -10 and -35 regions in Actinobacteria. Further analysis of the beta-galactosidase activity in the CYP153 gene promoter-lacZ fusion cell indicated that the CYP153 gene promoter was induced by n-alkanes comprised of 8 to 14 carbon atoms, but not by derived decanol and decanic acid. Moreover, we constructed a cypR mutant strain and found that the CYP153 gene promoter activities and CYP153 gene transcriptional levels in the mutant strain were depressed compared with those in the wild-type strain in the presence of n-alkanes, suggesting that CypR served as an activator for the CYP153 gene promoter. By comparing CYP153 gene arrangements in Actinobacteria and Proteobacteria, we found that the AraC family regulator is ubiquitously located upstream of the CYP153 gene, suggesting its universal regulatory role in CYP153 gene transcription. We further hypothesize that the observed mode of CYP153 gene regulation is shared by many Actinobacteria.; National Natural Science Foundation of China [31225001, 31300108]; National High Technology Research and Development Program of China [2012AA02A703]; SCI(E); EI; PubMed; ARTICLE; nieyong@gmail.com; xiaolei_wu@pku.edu.cn; 2; 608-619; 82
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/416759]
专题	工学院
推荐引用方式 GB/T 7714	Liang, Jie-Liang,JiangYang, Jing-Hong,Nie, Yong,et al. Regulation of the Alkane Hydroxylase CYP153 Gene in a Gram-Positive Alkane-Degrading Bacterium, Dietzia sp Strain DQ12-45-1b[J]. APPLIED AND ENVIRONMENTAL MICROBIOLOGY,2016.
APA	Liang, Jie-Liang,JiangYang, Jing-Hong,Nie, Yong,&Wu, Xiao-Lei.(2016).Regulation of the Alkane Hydroxylase CYP153 Gene in a Gram-Positive Alkane-Degrading Bacterium, Dietzia sp Strain DQ12-45-1b.APPLIED AND ENVIRONMENTAL MICROBIOLOGY.
MLA	Liang, Jie-Liang,et al."Regulation of the Alkane Hydroxylase CYP153 Gene in a Gram-Positive Alkane-Degrading Bacterium, Dietzia sp Strain DQ12-45-1b".APPLIED AND ENVIRONMENTAL MICROBIOLOGY (2016).