DNA Sequencing Using the Sanger Chain-Termination Method
Sanger sequencing operates on the principle of chain-termination synthesis to determine nucleotide sequences by generating a population of DNA fragments with specific lengths corresponding to each base position. The method utilizes differential electrophoretic mobility in an ordered matrix to separate these terminators, where fluorescent labeling distinguishes cytosine (green), adenine (blue), guanine (yellow), and thymine (red) for automated detection. This biochemical mechanism serves as a foundational high-throughput technique within molecular biology for resolving primary nucleotide structures of genetic material.
Sanger DNA Sequencing with Fluorescent Dideoxynucleotide Chain Termination
Sanger sequencing (chain-termination sequencing) determines the primary nucleotide order of a DNA molecule by exploiting the chemistry of dideoxynucleotide triphosphates (ddNTPs), which lack the 3' h…