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Application of the ETD/PTR reactions in top-down proteomics as a faster alternative to bottom-up nanoLC-MS/MS protein identification

机译:ETD / PTR反应在自上而下的蛋白质组学中的应用,是自下而上的nanoLC-MS / MS蛋白质鉴定的更快替代方法

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摘要

Our goal was to compare two popular analytical techniques used nowadays in proteomic investigations for proteins/peptides sequencing and identification, a widely used nanoLC-MS/MS approach applied in the bottom-up proteomics and electron transfer dissociation/proton transfer reaction fragmentation preferably used when top-down strategy is applied. Comparison was carried out with the aid of the ESI-quadrupole ion-trap instrument using the following criteria: total time of analysis including sample preparation, sequence coverage, Mascot scoring, capability to detect modifications, quality of the results as a function of protein molecular weight and sample consumption.
机译:我们的目标是比较当今蛋白质组学研究中用于蛋白质/肽测序和鉴定的两种流行分析技术,自下而上蛋白质组学中广泛使用的nanoLC-MS / MS方法和电子转移解离/质子转移反应片段采用自上而下的策略。借助于ESI-四极杆离子阱仪器,使用以下标准进行比较:分析的总时间,包括样品制备,序列覆盖,吉祥物评分,检测修饰的能力,结果质量与蛋白质分子的关系重量和样品消耗。

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