High-throughput sample preparation for protein or peptide structural characterization

Area of Science:

• Biochemistry
• Analytical Chemistry
• Proteomics

Background:

• High-performance liquid chromatography (HPLC) coupled with mass spectrometry is essential for biomolecular identification.
• Rapid technological advancements necessitate efficient, high-throughput sample preparation methods.
• Current sample preparation techniques can be a bottleneck in biomolecular analysis workflows.

Purpose of the Study:

• To evaluate the efficiency of MultiScreen 96-well filter plates for high-throughput sample preparation.
• To assess the performance of various chromatographic materials (C18, silica, divinylbenzene) in these plates.
• To demonstrate the utility of these mini-columns for sample clean-up in HPLC and mass spectrometry.

Main Methods:

• Testing of C18 resin, silica, and sulfonated divinylbenzene particles in MultiScreen 96-well filter plates.
• Utilizing the Multiscreen Column Loader for simultaneous, uniform loading of samples.
• Analysis of sample recovery and well-to-well reproducibility using HPLC.

Main Results:

• MultiScreen filter plates efficiently removed salts and detergents, ensuring excellent sample recovery.
• High well-to-well reproducibility was observed during analyte adsorption, washing, and elution.
• Effective sample clean-up was demonstrated for proteins, peptides, and proteolytic digests.

Conclusions:

• MultiScreen 96-well filter plates provide a convenient and efficient solution for high-throughput sample preparation in HPLC and mass spectrometry.
• The system demonstrates excellent reproducibility and sample recovery, addressing a critical bottleneck in biomolecular analysis.
• These mini-columns are valuable tools for sample clean-up, enhancing the overall efficiency of proteomic workflows.