DNA Barcodes using a Cylindrical Nanopore

TL;DR

This paper presents a highly accurate method for DNA barcode identification using dwell time measurements of protein tags in a cylindrical nanopore, supported by Brownian dynamics simulations and a recursive theoretical scheme.

Contribution

The study introduces a novel recursive theoretical approach combined with simulations to improve DNA barcode accuracy to nearly 100% using nanopore technology.

Findings

Achieved near-perfect accuracy in DNA barcode detection.

Developed a physically motivated interpolation scheme for velocity determination.

Analyzed DNA motion through cylindrical nanopores, enabling experimental applications.

Abstract

We report an accurate method to determine DNA barcodes from the dwell time measurement of protein tags (barcodes) along the DNA backbone using Brownian dynamics simulation of a model DNA and use a recursive theoretical scheme which improves the measurements to almost 100 % accuracy. The heavier protein tags along the DNA backbone introduce a large speed variation in the chain that can be understood using the idea of non-equilibrium tension propagation theory. However, from an initial rough characterization of velocities into "fast" (nucleotides) and "slow" (protein tags) domains, we introduce a physically motivated interpolation scheme that enables us to determine the barcode velocities rather accurately. Our theoretical analysis of the motion of the DNA through a cylindrical nanopore opens up the possibility of its experimental realization and carries over to multi-nanopore devices used for barcoding.