BIOSS
Centre for Biological Signalling Studies

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

J Proteome Res             online article

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.