Fluorometric Quantitation of DNA Using Hoechst 33258 Protocol Protocol describes the quantitation of DNA using Hoechst 33258, a fluorescent dye that binds to double-stranded DNA. Fluorometry is simple and more sensitive than spectrophotometry, and allows the detection of nanogram quantities of DNA. The assay can only be used to measure the concentration of DNAs whose sizes exceed ~1 kb, as Hoechst 33258 binds poorly to smaller DNA fragments.
Restriction Landmark Genomic Scanning Protocol Restriction landmark genomic scanning (RLGS) is a method to detect large numbers of restriction landmarks in a single experiment. It is based on the concept that restriction enzyme sites can serve as landmarks throughout a genome. RLGS uses direct end-labeling of the genomic DNA digested with a rare-cutting restriction enzyme and high-resolution two-dimensional electrophoresis.