Combination Detergent/MALDI Matrix: Functional Cleavable Detergents for Mass Spectrometry
作者:Jeremy L. Norris、Ned A. Porter、Richard M. Caprioli
DOI:10.1021/ac050460g
日期:2005.8.1
This study reports the synthesis of the first functional cleavable detergent designed specifically for applications in mass spectrometry. Upon cleavage, two inert compounds and the MALDI matrix are formed, eliminating sources of potential interference originating from traditional cleavable detergents. Analysis of peptides demonstrates that MALDI matrix generated in situ results in MALDI spectra equivalent to those prepared using established protocols. Analysis of the membrane protein diacylglycerol kinase was accomplished using the combination detergent/MALDI matrix. Applications of the functional cleavable detergents to the profiling of whole cell lysates results in increased signal-to-noise ratios of many ions and the detection of additional proteins previously not observed.
本研究报告了第一种专门为质谱应用设计的功能性可裂解洗涤剂的合成。在裂解过程中,会形成两个惰性化合物和MALDI基质,从而消除了传统可裂解洗涤剂所带来的潜在干扰源。对肽的分析表明,就地生成的MALDI基质所产生的MALDI谱与采用既定协议准备的谱相当。使用组合洗涤剂/MALDI基质成功分析了膜蛋白二酰甘油激酶。将功能性可裂解洗涤剂应用于整个细胞裂解液的分析中,许多离子的信噪比得到了提高,并且检测到了以前未观察到的额外蛋白质。