Chemically functionalized conical PET nanopore for protein detection at the single-molecule level

Area of Science:

• Biophysics
• Nanotechnology
• Biochemistry

Background:

• Proteins are vital biomolecules with diverse cellular functions.
• Accurate protein detection is crucial for diagnostics and personalized medicine.
• Existing methods for protein analysis can be limited in sensitivity or speed.

Purpose of the Study:

• To develop a novel nanopore-based sensor for single-molecule protein detection.
• To demonstrate the sensitivity, selectivity, and rapid differentiation capabilities of the sensor.
• To explore the potential of the sensor for label-free protein characterization.

Main Methods:

• Fabrication of chemically functionalized, conical poly-(ethylene terephthalate) nanopores (PET nanopores).
• Utilizing the PET nanopore as a stochastic sensing element for protein analysis.
• Single-molecule detection and characterization of proteins based on their translocation through the nanopore.

Main Results:

• The PET nanopore sensor achieved sensitive and selective detection of proteins at the single-molecule level.
• The sensor demonstrated the ability to rapidly differentiate between different proteins.
• Label-free detection and characterization of proteins were successfully demonstrated.

Conclusions:

• The developed PET nanopore sensor offers a promising platform for fundamental protein dynamics studies.
• This technology facilitates rapid, single-molecule protein detection and characterization.
• The sensing strategy opens new avenues for biosensing technologies and biomimetic systems.