| Plant ARGONAUTE Protein Immunopurification for Pathogen Cross Kingdom Small RNA Analysis
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Author:
Date:
2021-02-05
[Abstract] Over the last decade, it has been noticed that microbial pathogens and pests deliver small RNA (sRNA) effectors into their host plants to manipulate plant physiology and immunity for infection, known as cross kingdom RNA interference. In this process, fungal and oomycete parasite sRNAs hijack the plant ARGONAUTE (AGO)/RNA-induced silencing complex to post-transcriptionally silence host target genes. We hereby describe the methodological details of how we recovered cross kingdom sRNA effectors of the oomycete pathogen Hyaloperonospora arabidopsidis during infection of its host plant Arabidopsis thaliana. This Bio-protocol contains two parts: first, a detailed description on the procedure of plant AGO/sRNA co-immunopurification and sRNA recovery for Illumina high throughput sequencing ...
[摘要] [摘要]在过去的十年中，已经注意到，微生物病原体和害虫将小RNA（sRNA）效应子传递到宿主植物中，以操纵植物生理学和免疫力，称为跨界RNA干扰。在此过程中，真菌和卵菌寄生虫sRNA劫持了植物ARGONAUTE（AGO）/ RNA诱导的沉默复合体，以转录后沉默宿主靶基因。我们在此描述方法学的细节，我们如何在宿主植物拟南芥感染期间恢复卵菌病原体拟南芥的跨界sRNA效应子。该生物协议包含两个部分：第一，关于植物AGO / sRNA co- 免疫纯化和sRNA回收，用于Illumina高通量测序分析。其次，我们解释了如何进行生物信息学小号斯尔纳序列分析读取可使用Galaxy服务器。原则上，该协议适用于研究来自多种宿主植物和植物相互作用（微生物）的AGO结合的sRNA。
[背景]小RNA（sRNA）可以充当病原体效应物，劫持植物ARGONAUTE（AGO）/ RNA诱导的沉默复合物（RISC），并使宿主mRNA沉默以进行感染，这种病毒被称为跨界RNA干扰的毒力机制（Weiberg等。，2015； Zeng等，2019）。分析感染期间与植物AGO结合的sRNA的库是一种选择方法，以全面了解可能通过宿主AGO / RISC起作用的植物入侵性病原体sRNA。基于抗体的植物AGO / ...
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| Immunoblot Analysis of Histone H4 Acetylation and Histone H2A Phosphorylation in Candida albicans
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Author:
Date:
2013-10-20
[Abstract] Posttranslational modifications of histones are required for different processes including transcription, replication and DNA damage repair. This protocol describes the preparation of a whole-cell extracts for the fungal pathogen Candida albicans. Furthermore, the extract is used to detect lysine acetylation of histone H4 as well as serine 129 phosphorylation of histone H2A by immunoblot analysis.
[摘要] 包括转录，复制和DNA损伤修复的不同过程需要组蛋白的翻译后修饰。 该方案描述了真菌病原体白色念珠菌的全细胞提取物的制备。 此外，提取物用于通过免疫印迹分析检测组蛋白H4的赖氨酸乙酰化以及组蛋白H2A的丝氨酸129磷酸化。
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