Here, we present a novel and highly robust method for the separation and identification of HeLa cell membrane proteins by an LC-only based separation strategy. Employing optimized reversed phase (RP) conditions and using a uniquely designed reversed-phase column material specifically engineered to enable high efficient separation of membrane proteins, the results demonstrate that this approach allows high identifications of membrane proteins.
Membrane proteins are essential for physiological processes but are difficult to profile due to their hydrophobic nature and low abundance. Traditional methods like gel electrophoresis often yield poor recoveries, while standard reversed-phase chromatography suffers from non-reproducibility.
This document presents a novel proteomic strategy utilizing the Agilent High Recovery mRP-C18 Reversed-Phase HPLC Column. By employing optimized RP conditions and an in-solution digestion workflow, researchers successfully identified more than 954 proteins (including 337 integral membrane proteins) from HeLa cell membranes. This method serves as a fast, reliable, and reproducible alternative to traditional SDS-PAGE fractionation.
The method identified more than 954 proteins, including 470 membrane proteins and 337 integral membrane proteins.
The strategy was demonstrated using HeLa cell membrane proteins.
Profiling membrane proteins is challenging due to their hydrophobic nature and low abundance.