The N-acetyl-D-glucosamine repressor NagC of Vibrio fischeri facilitates colonization of Euprymna scolopes.

The N-acetyl-D-glucosamine repressor NagC of Vibrio fischeri facilitates colonization of Euprymna scolopes.
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DOI:
10.1111/j.1365-2958.2011.07858.x
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发表时间:
2011-11
影响因子:
3.6
通讯作者:
Ruby EG
Ruby EG
中科院分区:
生物学2区
文献类型:
--
作者:
Miyashiro T;Klein W;Oehlert D;Cao X;Schwartzman J;Ruby EG

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为了成功地在宿主生态位内定植和持续存在,细菌必须适当地调节它们的基因表达谱。海洋细菌费氏弧菌(Vibrio fischeri)在夏威夷鱿鱼的发光器官内建立了互惠共生关系。在这里,我们表明,阻遏物NagC的V. fischeri直接调节几个几丁质和N-乙酰-D-葡萄糖胺利用基因,在生产共生过程中共同调节。我们还证明了在N-乙酰基-D-葡糖胺-6-磷酸(N-乙酰基-D-葡糖胺的细胞内形式)存在下,NagC的抑制得到缓解。我们发现NagC基因的阻遏作用是大肠杆菌高效定殖的关键。我是说...此外,我们的研究表明,NagC调节影响宿主定植正常动态的基因。
To successfully colonize and persist within a host niche, bacteria must properly regulate their gene expression profiles. The marine bacterium Vibrio fischeri establishes a mutualistic symbiosis within the light organ of the Hawaiian squid, Euprymna scolopes. Here, we show that the repressor NagC of V. fischeri directly regulates several chitin- and N-acetyl-D-glucosamine-utilization genes that are co-regulated during productive symbiosis. We also demonstrate that repression by NagC is relieved in the presence of N-acetyl-D-glucosamine-6-phosphate, the intracellular form of N-acetyl-D-glucosamine. We find that gene repression by NagC is critical for efficient colonization of E. scolopes. Further, our study shows that NagC regulates genes that affect the normal dynamics of host colonization.
DOI: 10.1111/j.1365-2958.2010.07309.x
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影响因子: 3.6
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