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Non-sterile 96-well flat bottom transparent plates

96孔EIA / RIA透明平底聚苯乙烯未处理微孔板

Company: Corning
Catalog#: 9017
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Affinity Purification of GO-Matryoshka Biosensors from E. coli for Quantitative Ratiometric Fluorescence Analyses
Author:
Date:
2020-10-05
[Abstract]  Genetically encoded biosensors are powerful tools for quantitative visualization of ions and metabolites in vivo. Design and optimization of such biosensors typically require analyses of large numbers of variants. Sensor properties determined in vitro such as substrate specificity, affinity, response range, dynamic range, and signal-to-noise ratio are important for evaluating in vivo data. This protocol provides a robust methodology for in vitro binding assays of newly designed sensors. Here we present a detailed protocol for purification and in vitro characterization of genetically encoded sensors, exemplified for the His affinity-tagged GO-(Green-Orange) MatryoshCaMP6s calcium sensor. GO-Matryoshka sensors are based on single-step insertion ... [摘要]  [摘要]遗传编码的生物传感器是强大的工具为离子和代谢物的定量可视化在体内。设计和优化此类生物传感器通常需要分析大量变体。体外确定的传感器特性,例如底物特异性,亲和力,响应范围,动态范围和信噪比,对于评估体内数据很重要。该协议为新设计的传感器的体外结合测定提供了可靠的方法。这里我们提出了一个详细的协议用于纯化和体外表征的遗传编码的传感器,例示的His亲和标记的GO-(绿橙色)MatryoshCaMP6s钙传感器。GO-Matryoshka传感器基于在感兴趣的结合蛋白内一步插入一个包含两个嵌套荧光蛋白,圆形排列的荧光绿色FP(cpGFP )和Large Stoke Shift LSSmOrange的盒的方法,从而产生了利用被分析物触发的比例式传感器cpGFP的荧光变化。


[背景技术]将绿色荧光蛋白(GFP)在1962年被鉴定在水母水母维多利亚(下村等人,1962) 。30年后,描述了其首次用作报道基因(Chalfie等,1994)。自从发现以来,GFP变体和其他荧光蛋白为生物科学的主要进步做出了巨大贡献,并且现在已成为生物医学研究中的常用工具(Frommer等,2009)。

各种荧光蛋白(FP)和FP变异体已被用作报道分子或与所有生命王国的生物体中的蛋白融合(Chudakov等,2010 ;Valeur和Berberan- ...

ELISA for Alpha-hemolysin (Hla) in Methicilin-resistant Staphylococcus aureus (MRSA)
Author:
Date:
2014-05-05
[Abstract]  Anti-virulence agents against MRSA inhibit the production of disease-causing virulence factors, such as alpha-hemolysin, but are neither bacteriostatic nor bactericidal. Here we discuss a rapid method to screen for MRSA anti-virulence agents by measuring alpha-hemolysin production through ELISA. This protocol can be used with other alpha-hemolysin producing bacteria or for other excreted toxins to which antibodies exist. [摘要]  针对MRSA的抗毒剂抑制引起疾病的毒力因子如α-溶血素的产生,但既不是抑菌性的也不是杀细菌性的。 在这里我们讨论一种快速方法来筛选MRSA抗毒力试剂通过测量α-溶血素的生产通过ELISA。 该方案可以与其它产生α-溶血素的细菌或存在抗体的其它排泄毒素一起使用。

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