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Casamino Acids, 200g

Casamino Acids, 200g

Company: Teknova
Catalog#: C2000
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Pyocyanin Extraction and Quantitative Analysis in Swarming Pseudomonas aeruginosa
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2016-12-05
[Abstract]  This protocol describes the quantification of pyocyanin extracted from swarming colonies of Pseudomonas aeruginosa. Pyocyanin is a secondary metabolite and a major virulence factor, whose production is inducible and varies highly under different growth conditions. The protocol is based on the earlier developed chloroform/HCl extraction of pyocyanin from liquid cultures (Frank and Demoss, 1959). Swarming colonies together with the agar they occupy are split into two halves. Pyocyanin is extracted from one of them. Cells are collected from the other half and used to quantify total protein yield and normalize the estimated corresponding pyocyanin quantities. [摘要]  该方案描述了从绿脓假单胞菌的群体群体提取的绿脓素的定量。绿脓素是次级代谢产物和主要毒力因子,其生产是可诱导的并且在不同生长条件下高度变化。该方案基于早先开发的氯仿/HCl从液体培养物中提取绿脓素(Frank和Demoss,1959)。聚集的菌落与它们所占据的琼脂一起分成两半。从它们之一提取绿脓菌素。从另一半收集细胞并用于定量总蛋白质产量并使估计的相应的绿脓素量标准化。
关键字:绿靛,Swarming,铜绿色,氯仿提取,毒力因子,运动性

[背景] 绿脓菌素是一种由人类病原体产生的蓝色氧化还原活性吩嗪色素。铜绿。绿脓菌素大量存在于感染有P的囊性纤维化患者的痰液中。 (Wilson等人,1988),并在病原体的毒力中起重要作用(Lau等人,2004)。绿脓菌素产生通过群体感应来调节,其涉及调节毒力基因的表达的信号分子的细胞密度依赖性合成(Fuqua等人,2001)。群集是响应于多种环境信号并使得细胞在半固体表面上的运动和宿主组织的建群而形成的复杂的共同行为。我们早先的观察表明,在液体培养物中的绿脓素生产。铜绿色与群体中的群体显着不同,可能是由于群体感应调节。因此,我们开发了一个协议,允许提取和定量的绿脓菌分泌的细胞成周围的琼脂分泌。所获得的量通过从群集细胞提取的总细胞蛋白质归一化。该方案不同于从固体琼脂表面(De ...

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