An improved rapid mixing device for time-resolved electrospray mass spectrometry measurements.

An improved rapid mixing device for time-resolved electrospray mass spectrometry measurements.
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改进的快速混合装置,用于时间分辨电喷雾质谱测量。

DOI:
10.1002/open.201402002
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发表时间:
2014-06
期刊:
影响因子:
2.3
通讯作者:
Sharon, Michal
Sharon, Michal
中科院分区:
化学3区
文献类型:
--
作者:
Zinck, Nicholas;Stark, Ann-Kathrin;Wilson, Derek J.;Sharon, Michal

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时间序列数据可以为了解生物反应的复杂性提供有价值的见解。这些信息可以通过基于质谱的方法获得,该方法测量预稳态动力学。这些方法是基于一个混合装置,该装置在瞬态中间步骤的在线质量测量之前快速混合反应物。在这里,我们描述了一个改进的连续流混合装置,用于实时电喷雾质谱测量。我们的装置旨在最大限度地减少金属溶液界面,并提供氮气护套流,以产生稳定连续的喷雾,从而提高信噪比。此外,该装置计划使其易于安装在质谱仪上,以取代商用电喷雾电离源。我们通过监测细胞色素C的展开反应来证明我们的装置的性能,从而提高了信噪比,减少了实验重复误差。
Time series data can provide valuable insight into the complexity of biological reactions. Such information can be obtained by mass-spectrometry-based approaches that measure pre-steady-state kinetics. These methods are based on a mixing device that rapidly mixes the reactants prior to the on-line mass measurement of the transient intermediate steps. Here, we describe an improved continuous-flow mixing apparatus for real-time electrospray mass spectrometry measurements. Our setup was designed to minimize metal–solution interfaces and provide a sheath flow of nitrogen gas for generating stable and continuous spray that consequently enhances the signal-to-noise ratio. Moreover, the device was planned to enable easy mounting onto a mass spectrometer replacing the commercial electrospray ionization source. We demonstrate the performance of our apparatus by monitoring the unfolding reaction of cytochrome C, yielding improved signal-to-noise ratio and reduced experimental repeat errors.
DOI: 10.1146/annurev.anchem.111808.073740
发表时间: 2010-01-01
期刊: ANNUAL REVIEW OF ANALYTICAL CHEMISTRY, VOL 3
影响因子: --
作者:
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