Combinatorial Use of Electrostatic Repulsion-Hydrophilic Interaction Chromatography (ERLIC) and Strong Cation Exchange (SCX) Chromatography for In-Depth Phosphoproteome Analysis
20.07.2012
Zarei M, Sprenger A, Gretzmeier C, Dengjel J.
J Proteome Res. 2012 Aug 3;11(8):4269-76
We present a novel strategy based on the combinatorial separation of singly and multiply phosphorylated peptides by SCX and ERLIC for in-depth phosphoproteome analysis. Compared to single step fractionations by SCX, the
combinatorial strategies, SCX-ERLIC and ERLIC-SCX, yield up to 48% more phosphopeptide identifications as well as a strong increase in the number of detected multiphosphorylated peptides.