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GatewayTM LR ClonaseTM II Enzyme mix

Company: Thermo Fisher Scientific
Catalog#: 11791100
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Bimolecular Fluorescence Complementation (BiFC) for Studying Sarcomeric Protein Interactions in Drosophila
Author:
Date:
2020-04-05
[Abstract]  Protein-protein interactions in Drosophila myofibrils are essential for their function and formation. Bimolecular Fluorescence Complementation (BiFC) is an effective method for studying protein interactions and localization. BiFC relies on the reconstitution of a monomeric fluorescent protein from two half-fragments when in proximity. Two proteins tagged with the different half-fragments emit a fluorescent signal when they are in physical contact, thus revealing a protein interaction and its spatial distribution. Because myofibrils are large networks of interconnected proteins, BIFC is an ideal method to study protein-protein interactions in myofibrils. Here we present a protocol for generating transgenic flies compatible with BiFC and a method for analyzing protein-protein ... [摘要]  [摘要] 果蝇肌原纤维中的蛋白质-蛋白质相互作用对其功能和形成至关重要。双分子荧光互补(BiFC )是研究蛋白质相互作用和定位的一种有效方法。BiFC 依赖于邻近时从两个半片段重构单体荧光蛋白。标记有不同半片段的两种蛋白质在物理接触时会发出荧光信号,从而揭示了蛋白质相互作用及其空间分布。因为肌原纤维相互连接的蛋白质的大型网络中,附设是一种理想的方法来 研究肌原纤维中蛋白质之间的相互作用。在这里,我们提出了一种生成与BiFC 兼容的转基因果蝇的协议,以及一种基于肌原纤维中荧光BiFC 信号的蛋白质-蛋白质相互作用分析方法。我们的方案适用于大多数果蝇蛋白,只需稍加修改即可用于研究任何组织。

[背景] 肉瘤是横纹肌中最小的收缩单位,并沿着肌原纤维的长度以重复的方式延伸(Reedy和Beall,1993)。肉瘤产生肌肉收缩的能力取决于两个肌原纤维成分:细丝和粗丝。肌球蛋白粗丝固定在肌节中心的M线,而肌动蛋白细丝固定在肌节两侧的Z盘上。因此,Z盘对于维持肌原纤维的结构和收缩至关重要,而Z盘无法形成可能导致各种人类肌病的严重缺陷性肌肉表型(Lemke和Schnorrer,2017年)。

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Lentiviral Knockdown of Transcription Factor STAT1 in Peromyscus leucopus to Assess Its Role in the Restriction of Tick-borne Flaviviruses
Author:
Date:
2017-12-05
[Abstract]  Cellular infection with tick-borne flaviviruses (TBFVs) results in activation of the interferon (IFN) signaling pathway and subsequent upregulation of numerous genes termed IFN stimulated genes (ISGs) (Schoggins et al., 2011). Many ISGs function to prevent virus pathogenesis by acting in a broad or specific manner through protein-protein interactions (Duggal and Emerman, 2012). The potency of the IFN signaling response determines the outcome of TBFV infection (Best, 2017; Carletti et al., 2017). Interestingly, data from our lab show that TBFV replication is significantly restricted in cells of the reservoir species Peromyscus leucopus thereby suggesting a potent antiviral response (Izuogu et al., 2017). We assessed the relative contribution of IFN ... [摘要]  蜱传黄热病病毒(TBFV)的细胞感染导致干扰素(IFN)信号传导途径的激活和随后称为IFN刺激基因(ISG)(Schoggins等人,2011)的众多基因的上调。许多ISG通过蛋白质 - 蛋白质相互作用以广泛或特定的方式起作用来防止病毒发病(Duggal和Emerman,2012)。 IFN信号反应的效力决定了TBFV感染的结果(Best,2016; Carletti等人,2017)。有趣的是,我们实验室的数据显示TBFV复制在储库物种Peromyscus leucopus的细胞中显着受到限制,从而表明有效的抗病毒应答(Izuogu等人,2017)。我们评估干扰素信号对抗性的相对贡献。通过敲低IFN反应途径中的主要转录因子来抑制白血病。信号转导和转录激活因子1(STAT1)是专门针对在P。 leucopus细胞通过shRNA技术。我们进一步测试了基因敲低对细胞对IFN反应和限制病毒复制的能力的影响;结果表明当STAT1表达被改变时,leucopus细胞对IFN刺激的反应降低,并且对TBFV复制显着更敏感。

【背景】IFN信号是抵抗侵入宿主细胞的黄病毒的第一道防线(Robertson等人,2009; Lazear和Diamond,2015)。通过模式识别受体(PRR)检测与病毒颗粒相关的分子标记,然后通过转录因子引发下游信号从细胞释放1型IFN(Kawai ...

Trimolecular Fluorescence Complementation (TriFC) Assay for Direct Visualization of RNA-Protein Interaction in planta
Author:
Date:
2017-10-20
[Abstract]  RNA-Protein interactions play important roles in various eukaryotic biological processes. Molecular imaging of subcellular localization of RNA/protein complexes in plants is critical for understanding these interactions. However, methods to image RNA-Protein interactions in living plants have not yet been developed until now. Recently, we have developed a trimolecular fluorescence complementation (TriFC) system for in vivo visualization of RNA-Protein interaction by transient expression in tobacco leaves. In this method, we combined conventional bimolecular fluorescence complementation (BiFC) system with MS2 system (phage MS2 coat protein [MCP] and its binding RNA sequence [MS2 sequence]) (Schonberger et al., 2012). Target RNA is tagged with 6xMS2 and MCP and RNA binding ... [摘要]  RNA-蛋白质相互作用在各种真核生物过程中起重要作用。 RNA /蛋白质复合物在植物中亚细胞定位的分子成像对于理解这些相互作用至关重要。然而,到目前为止,尚未开发在活植物中形成RNA-蛋白质相互作用的方法。最近,我们开发了一种三分子荧光互补(TriFC)系统,用于在烟草叶中瞬时表达的RNA-蛋白质相互作用的体内可视化。在这种方法中,我们将传统的双分子荧光互补(BiFC)系统与MS2系统(噬菌体MS2外壳蛋白[MCP]及其结合RNA序列[MS2序列])(Schonberger等人,2012)相结合, 。目标RNA用6xMS2标记,MCP和RNA结合蛋白与YFP片段融合。编码这种融合RNA和蛋白质的DNA构建体用土壤杆菌悬浮液渗入烟草叶中。通过共焦显微镜观察体内的RNA-蛋白质相互作用
【背景】近来,多种类型的长非编码RNA(lncRNA)已经被鉴定并显示出在转录调节和染色质修饰中起重要作用(St Laurent等人,2015)。到目前为止,lncRNA介导的功能的大多数分子机制与RNA-蛋白质相互作用密切相关(St ...

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