Surface plasmon resonance mass spectrometry in proteomics

Area of Science:

• Proteomics
• Biochemistry
• Analytical Chemistry

Background:

• The complexity of the proteome necessitates targeted analysis over whole proteome studies.
• Affinity-based enrichment is crucial for isolating specific protein subsets.
• Surface Plasmon Resonance (SPR) is an emerging label-free technique for real-time, semiquantitative monitoring of enrichment.

Purpose of the Study:

• To illustrate the application of SPR coupled with Mass Spectrometry (SPR-MS) for targeted proteomics.
• To demonstrate the versatility of SPR-MS using diverse immobilized components.
• To evaluate the capabilities and limitations of SPR-MS in proteomics research.

Main Methods:

• Utilizing Surface Plasmon Resonance (SPR) for real-time, label-free monitoring of affinity-based enrichment.
• Integrating SPR with Mass Spectrometry (MS) for selective protein enrichment and identification.
• Applying SPR-MS with various immobilized ligands, including small molecules, peptides, DNA, and proteins.

Main Results:

• SPR-MS successfully enables targeted enrichment and identification of specific proteins from complex samples.
• The technique demonstrates broad applicability across different types of immobilized components.
• Real-time monitoring by SPR provides semiquantitative insights into the enrichment process.

Conclusions:

• SPR-MS is a valuable and versatile technique for addressing targeted proteomics research questions.
• The combination of SPR and MS offers enhanced capabilities for protein analysis.
• Future developments are expected to further expand the utility of SPR-MS in proteomics.