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蛋白質組學應用:壓力循環技術催進蛋白酶解能力
閱讀:2346發布時間:2009-5-20
蛋白質組學應用:壓力循環技術催進蛋白酶解能力
Application of Pressurized Solvents for Ultrafast Trypsin Hydrolysis in Proteomics:
Proteomics on the Fly
摘要:
一種在高壓下迅速水解蛋白質的新方法: 利用壓力循環技術范圍為5-35 kpsi;從而協助蛋白質組學分析。壓力循環技術成功在60sec內把單一蛋白質及復雜的蛋白質水解.然后利用反相液相色譜分析。本文中, 利用壓力循環技術新方法進行Shewanella oneidensis 多肽水解與傳統的“過夜”樣品制備方法作對比. 新方法-壓力循環的優勢:包括簡化樣品處理過程,易于實施,實驗中樣品沒有交叉污染,和成本效率高。
Abstract:
A new method for rapid proteolytic digestion of proteins under high pressure that uses pressure cycling technology in the range of 5-35 kpsi was demonstrated for proteomic analysis. Successful in-solution digestions of single proteins and complex protein mixtures were achieved in 60 s and then analyzed by reversed phase liquid chromatography-electrospray ionization ion trap-mass spectrometry. Method performance in terms of the number of Shewanella oneidensis peptides and proteins identified in a shotgun approach was evaluated relative to a traditional “overnight” sample preparation method. Advantages of the new method include greatly simplified sample processing, easy implementation, no cross contamination among samples, and cost effectiveness.
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