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D-GLUCOSE MONOHYDRATE

D-葡萄糖单羟基酸

Company: Duchefa Biochemie
Catalog#: G0802
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Detection of Protein Interactions in the Cytoplasm and Periplasm of Escherichia coli by Förster Resonance Energy Transfer
Author:
Date:
2018-01-20
[Abstract]  This protocol was developed to qualitatively and quantitatively detect protein-protein interactions in Escherichia coli by Förster Resonance Energy Transfer (FRET). The described assay allows for the previously impossible in vivo screening of periplasmic protein-protein interactions. In FRET, excitation of a donor fluorescent molecule results in the transfer of energy to an acceptor fluorescent molecule, which will then emit light if the distance between them is within the 1-10 nm range. Fluorescent proteins can be genetically encoded as fusions to proteins of interest and expressed in the cell and therefore FRET protein-protein interaction experiments can be performed in vivo. Donor and acceptor fluorescent protein fusions are constructed for bacterial proteins ... [摘要]  该协议的开发是通过Förster共振能量转移(FRET)定性和定量检测大肠杆菌中的蛋白质 - 蛋白质相互作用。所描述的测定允许以前不可能的周质蛋白质 - 蛋白质相互作用的体内筛选。在FRET中,供体荧光分子的激发导致能量转移到受体荧光分子,如果它们之间的距离在1-10nm范围内,则受体荧光分子将发光。荧光蛋白质可以被遗传编码为与感兴趣的蛋白质的融合物并且在细胞中表达,因此FRET蛋白质 - 蛋白质相互作用实验可以在体内进行。供体和受体荧光蛋白融合体被构建用于被怀疑相互作用的细菌蛋白质。这些融合蛋白在细菌细胞中共表达,随后激发供体和受体通道测量荧光发射光谱。供体的发射光谱与受体的激发光谱之间的部分重叠是FRET的先决条件。即使在没有FRET的情况下,供体激发也可以使受体以已知百分比交叉激发。通过测量背景,仅供体和仅受体样品的参考光谱,可以计算预期的发射光谱。在预期光谱之上的受体的致敏发射可以归因于FRET,并且可以通过光谱解混来量化。

【背景】确定如何和哪些蛋白质相互作用维持生命是分子生物学研究的核心。存在许多体外方法,但可能导致误报,因为相互作用是从其生物学背景中取出的。 ...

Ensifer-mediated Arabidopsis thaliana Root Transformation (E-ART): A Protocol to Analyse the Factors that Support Ensifer-mediated Transformation (EMT) of Plant Cells
Author:
Date:
2017-10-05
[Abstract]  Ensifer adhaerens OV14, a soil borne alpha-proteobacteria of the Rhizobiaceae family, fortifies the novel plant transformation technology platform termed ‘Ensifer-mediated transformation’ (EMT). EMT can stably transform both monocot and dicot species, and the host range of EMT is continuously expanding across a diverse range of crop species. In this protocol, we adapted a previously published account that describes the use of Arabidopsis thaliana roots to investigate the interaction of A. thaliana and Agrobacterium tumefaciens. In our laboratory, we routinely use A. thaliana root explants to examine the factors that enhance the utility of EMT. In addition, the E-ART protocol can be used to study the transcriptional response of E. ... [摘要]  OV14;土壤传播的根瘤菌科的α-变形细菌强化了新型植物转化技术平台,称为“插入式”介导的转化(EMT)。 EMT可以稳定地转化单子叶植物和双子叶植物,并且EMT的宿主范围在不同范围的作物种类上不断扩大。在这个协议中,我们调整了一个以前发布的帐户,描述了使用拟南芥根系来研究 A的相互作用。 thaliana 和根癌土壤杆菌。在我们的实验室,我们通常使用 A。 thaliana 根外植体,以检查增强EMT效用的因素。此外,E-ART协议可用于研究E的转录反应。接种外植体组织后的寄主植物,宿主植物,不同的引物菌株/突变体的可变性以及测试A的易感性。作为破译支持EMT的机制的手段。【背景】推进“Ensifer”介导的转化(EMT)技术以成功地转化双子叶菊,即拟南芥,马铃薯Solanum tuberosum ,Nicotiana tabacum ,Manihot esculenta ,欧洲油菜和单子叶植物;之前曾报道过(Wendt等人,2012; Zuniga-Soto等人),2015; Chavarriaga-Aguirre et al。,2016; Rathore等人,2016)。另外,E的基因组分析。 (2014)发现,该细菌具有7.7Mb的基因组,其包含两条环状染色体(3.96Mb和2.01Mb)和两条质粒(1.61Mb和125Kb) )。 ...

Agrobacterium-mediated Transformation of Strawberry
Author:
Date:
2014-01-05
[Abstract]  Traditional breeding for improvement of strawberry (Fragaria x ananassa) is difficult because strawberry is an octoploid, hybrid species. Genetic modification of strawberry would though be a promising alternative for obtaining the desired improvements in existing elite strawberry cultivars (Schaart et al., 2011). The availability of suitable genes for trait improvements in strawberry has however been a rate-limiting step until recently, but with the completion of the sequencing of the genome of woodland strawberry (F. vesca) (Shualev et al., 2011), we now have access to a treasure chest with valuable candidate genes. For strawberry, methods for genetic transformation have originally been described by Nehra et al. (1990) and James et al. ... [摘要]  由于草莓是八倍体,杂种物种,用于改善草莓( Fragaria x ananassa )的传统育种是困难的。草莓的遗传修饰虽然是获得现有的优良草莓栽培品种所期望的改进的有希望的替代方法(Schaart等人,2011)。然而,随着草地草莓基因组测序的完成(Shualev ),用于草莓中性状改善的合适基因的可用性是速率限制步骤 et al。,2011),我们现在可以获得宝贵的候选基因宝库。对于草莓,遗传转化的方法最初由Nehra等人(1990)和James等人(1990)描述,并且转化的成功被证明是高度的品种依赖。草莓转化的最新进展由Husaini等人审查(2011)。在我们的实验室中,草莓的转化是基于由Passey等人(2003)描述的苗再生方法和使用超强毒力土壤杆菌菌株AGL0(Lazo et al。,1991)。我们主要利用草莓转化作为候选基因功能分析的工具。为此,栽培品种Calypso是非常合适的基因型,因为其高转化效率(高达100%)和永不结实的特性,一旦植物开始开花,其提供草莓果实的连续供应。

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