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The Rab1 in host cells modulates Brucella intracellular survival and binds to Brucella DnaK protein

机译:宿主细胞中的Rab1调节布鲁氏菌细胞内存活并与布鲁氏菌DnaK蛋白结合

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摘要

The intracellular pathogen Brucella abortus (B. abortus) survives and replicates inside host cells within the Brucella-containing vacuole, in which membrane contains a small GTPase Rab1. Here, we reported that Rab1 mediates B. abortus intracellular growth. Furthermore, B. abortus DnaK was identified to interact with Rab1 using GST pull-down and mass spectrometry analysis. This interaction was confirmed by co-immunoprecipitation and immunofluorescence. Through DnaK-CyaA fusion protein translocation assay and immunofluorescence confocal microscopy, the B. abortus DnaK was proved to be a virB-dependent translocated substrate.
机译:细胞内病原体流产布鲁氏菌(B. abortus)存活并在含布鲁氏菌的液泡中的宿主细胞内复制,其中膜中含有小的GTPase Rab1。在这里,我们报道了Rab1介导流产芽孢杆菌的细胞内生长。此外,使用GST下拉和质谱分析鉴定了流产芽孢杆菌DnaK与Rab1相互作用。通过共同免疫沉淀和免疫荧光证实了这种相互作用。通过DnaK-CyaA融合蛋白易位测定和免疫荧光共聚焦显微镜,流产芽孢杆菌DnaK被证明是virB依赖的易位底物。

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