High-Performance Thin-Layer Chromatography Applications in Protein Characterization
Summary
High-performance thin-layer chromatography (HPTLC) has emerged as a rapid, versatile and cost-effective platform for the separation and analysis of proteins and their fragments. By employing finely divided sorbents on rigid plates, HPTLC achieves high resolution and reproducibility in parallel analyses, accommodating complex sample matrices from food, environmental and clinical sources. The technique is often coupled with selective derivatisation or immunostaining to visualise target proteins or peptides directly on the chromatographic layer. Integration with mass spectrometric methods further extends HPTLC’s capabilities, enabling direct identification and sequence analysis of separated bands. Across applications, HPTLC facilitates the detection of post-translational modifications, protein–ligand conjugates, allergenic epitopes and degradation products, thereby supporting quality control in the food industry, monitoring of therapeutic proteins and fundamental studies of protein structure and function.
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High-Performance Thin-Layer Chromatography Applications in Protein Characterization publication trend
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Technical terms
High-performance thin-layer chromatography (HPTLC): A planar chromatographic technique using high-performance sorbent layers to separate complex mixtures with improved resolution and reproducibility.
Immunostaining: A detection strategy in which antibodies bind to specific protein epitopes on chromatographic plates, enabling sensitive visualisation or densitometric quantification.
Semi-tryptic peptide: A peptide fragment generated when only one terminus corresponds to a specific enzymatic cleavage site, often reflecting partial digestion or modification.
MALDI-TOF-MS/MS: Tandem mass spectrometry using matrix-assisted laser desorption/ionisation time-of-flight to identify and sequence peptide fragments based on their mass-to-charge ratios.
References
- High-Performance Thin-Layer Chromatography-Immunostaining as a Technique for the Characterization of Whey Protein Enrichment in Edam Cheese. Foods (2022).
- Immunological Analysis of Isothiocyanate-Modified α-Lactalbumin Using High-Performance Thin Layer Chromatography. Molecules (2021).
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