Paving the way to single-molecule protein sequencing.

Area of Science:

• Biochemistry and Molecular Biology
• Analytical Chemistry
• Biotechnology

Background:

• Proteins are fundamental to life, and their analysis is crucial for understanding biological processes and diseases.
• Current protein sequencing methods are limited, often requiring large sample amounts and lacking sensitivity.
• Single-molecule techniques offer the potential for ultra-sensitive protein detection, including single-cell proteomics.

Purpose of the Study:

• To review novel single-molecule protein sequencing technologies.
• To discuss the experimental progress and challenges of these emerging techniques.
• To provide a perspective on the future development of single-molecule protein sequencing.

Main Methods:

• Review of proposed single-molecule protein sequencing schemes.
• Analysis of techniques utilizing fluorescence, tunnelling currents, and nanopores.
• Discussion of experimental realization efforts.

Main Results:

• Identification of fluorescence, tunnelling current, and nanopore-based single-molecule protein sequencing as promising approaches.
• Evaluation of the advantages and limitations of each method.
• Presentation of initial experimental findings and progress.

Conclusions:

• Single-molecule protein sequencing holds significant potential to advance proteomics research.
• Further development is needed to overcome current challenges and realize the full capabilities of these techniques.
• Emerging technologies offer a pathway towards highly sensitive and single-cell level protein analysis.