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Impact on theEndoplasmic Reticulumand Golgi Apparatusof Turnip MosaicVirus Infection Romain GrangeonMaxime AgbeciJun Chen2012 год

Impact on the Endoplasmic Reticulum and Golgi Apparatus of Turnip Mosaic Virus Infection
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Аннотация: The impact of turnip mosaic virus (TuMV) infection on the endomembranes of the host early secretory pathway was investigated using an infectious clone that has been engineered for tagging viral membrane structures with a fluorescent protein fused to the viral protein 6K(2). TuMV infection led to the amalgamation of the endoplasmic reticulum (ER), Golgi apparatus, COPII coatamers, and chloroplasts into a perinuclear globular structure that also contained viral proteins. One consequence of TuMV infection was that protein secretion was blocked at the ER-Golgi interface. Fluorescence recovery after photobleaching (FRAP) experiments indicated that the perinuclear structure cannot be restocked in viral components but was dynamically connected to the bulk of the Golgi apparatus and the ER. Experiments with 6K(2) fused to photoactivable green fluorescent protein (GFP) showed that production of motile peripheral 6K(2) vesicles was functionally linked to the perinuclear structure. Disruption of the early secretory pathway did not prevent the formation of the perinuclear globular structure, enhanced the clustering of peripheral 6K(2) vesicles with COPII coatamers, and led to inhibition of cell-to-cell virus movement. This suggests that a functional secretory pathway is not required for the formation of the TuMV perinuclear globular structure and peripheral vesicles but is needed for successful viral intercellular propagation.
Год издания: 2012
Авторы: Romain Grangeon, Maxime Agbeci, Jun Chen, Gilles Grondin, Huanquan Zheng, Jean‐François Laliberté
Издательство: American Society for Microbiology
Источник: Journal of Virology
Ключевые слова: Plant Virus Research Studies, Herpesvirus Infections and Treatments, Mosquito-borne diseases and control
Другие ссылки: Journal of Virology (HTML)
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