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Isolation of Rhp-PSP, a member of YER057c/YjgF/UK114 protein family with antiviral properties, from the photosynthetic bacterium Rhodopseudomonas palustris strain JSC-3b

文献类型： 外文期刊

作者： Su, Pin 1 ; Feng, Tuizi 1 ; Zhou, Xuguo; Zhang, Songbai 1 ; Zhang, Yu 1 ; Cheng, Ju'e 1 ; Luo, Yuanhua 1 ; Peng, Jing; 1 ;

作者机构： 1.Hunan Acad Agr Sci, Hunan Plant Protect Inst, Key Lab Integrated Management Pest & Dis Hort Cro, Changsha 410125, Hunan, Peoples R China

2.Hunan Acad Agr Sci, Hunan Plant Protect Inst, Key Lab Inte

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2015 年 5 卷

页码：

收录情况： SCI

摘要： Rhodopseudomonas palustris strain JSC-3b isolated from a water canal adjacent to a vegetable field produces a protein that was purified by bioactivity-guided fractionation based on ammonium sulfate precipitation, ion-exchange absorption and size exclusion. The protein was further identified as an endoribonuclease L-PSP (Liver-Perchloric acid-soluble protein) by shotgun mass spectrometry analysis and gene identification, and it is member of YER057c/YjgF/UK114 protein family. Herein, this protein is designated Rhp-PSP. Rhp-PSP exhibited significant inhibitory activities against tobacco mosaic virus (TMV) in vivo and in vitro. To our knowledge, this represents the first report on the antiviral activity of a protein of the YER057c/YjgF/UK114 family and also the first antiviral protein isolated from R. palustris. Our research provides insight into the potential of photosynthetic bacterial resources in biological control of plant virus diseases and sustainable agriculture.

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