Development of TiO2-Coated Monolithic Columns for Phosphopeptides Enrichment

Phosphoproteomics is a branch of proteomics that focuses on deriving a comprehensive view of the extent & dynamics of protein phosphorylation by way of identifying & characterizing proteins that contain a phosphate group as a posttranslational modification. One of the approaches for specific enrichment of phosphopeptides from complex samples is metal oxide affinity chromatography (MOAC), where the specific adsorption results from bridging bidentate bindings formed between the phosphate anions and the surface of a metal oxide, such as TiO2, ZrO2, Fe2O3, and Al2O3. In presented study, a rutile TiO2 nanoparticles were bound to a previously polymerized CIM hydroxy monoliths.

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