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Agilent Technologies 1290 Infinity G4212A DAD Diode Array Detector

Company: Agilent Technologies
Catalog#: G4212A
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Extraction, Purification and Quantification of Diffusible Signal Factor Family Quorum-sensing Signal Molecules in Xanthomonas oryzae pv. oryzae
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2017-03-20
[Abstract]  Bacteria use quorum-sensing (QS) systems to monitor and regulate their population density. Bacterial QS involves small molecules that act as signals for bacterial communication. Many Gram-negative bacterial pathogens use a class of widely conserved molecules, called diffusible signal factor (DSF) family QS signals. The measurement of DSF family signal molecules is essential for understanding DSF metabolic pathways, signaling networks, as well as regulatory roles. Here, we describe a method for the extraction of DSF family signal molecules from Xanthomonas oryzae pv. oryzae (Xoo) cell pellets and Xoo culture supernatant. We determined the levels of DSF family signals using ultra-performance liquid chromatographic system (UPLC) coupled with accurate mass ... [摘要]  细菌使用群体感知(QS)系统监测和调节其人口密度。细菌QS涉及作为细菌通信信号的小分子。许多革兰氏阴性细菌病原体使用一类广泛保守的分子,称为扩散信号因子(DSF)家族QS信号。 DSF家族信号分子的测量对于了解DSF代谢途径,信号网络以及调节作用至关重要。在这里,我们描述了从Xanthomonas oryzae pv提取DSF家族信号分子的方法。 ( Xoo )细胞沉淀和Xoo 培养上清液。我们使用超高效液相色谱系统(UPLC)与准确的质量飞行时间质谱仪(TOF-MS)联合测定DSF家族信号的水平。在UPLC / MS系统的帮助下,DSF的检测限低至1μM,大大提高了在细菌培养和反应混合物中检测DSF DSF家族信号分子的能力。

背景 黄单胞菌属 oryzae pv。米糠X ae))))))))))y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y十二碳烯酸(DSF),顺式-2-十二碳烯酸(BDSF),顺式-10-甲基-2-十二碳烯酸(IDSF)和顺式<顺式 -11-甲基十二烷-2,5-二烯酸(CDSF),以调节毒力因子产生(图1)。 DSF家族信号的生物合成,感知和周转需要Xoo 中的rpf ...

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