Glucose addition is the assay’s discrimination step. T4 phage β-glucosyltransferase specifically adds glucose to existing 5-hydroxymethylcytosine residues, creating a modified DNA state that can be evaluated during restriction-enzyme digestion. Quantifying the sequences that remain protected after digestion provides a basis for distinguishing hydroxymethylated sites from unmodified sites.
Restriction digestion converts the chemical labeling difference into a measurable DNA difference. After β-glucosyltransferase treatment, sequences containing labeled 5-hmC can show protection relative to unmodified sequences, and quantitative analysis of the protected fraction reflects hydroxymethylation at the examined sites. This links molecular recognition to an interpretable assay signal rather than relying only on chemical detection.
Global analysis summarizes hydroxymethylation across genomic DNA, whereas locus-specific analysis focuses on selected genomic sequences. Using either scale, the kit can reveal whether 5-hmC changes broadly or at particular loci. This distinction helps connect overall epigenetic remodeling with changes near genes or genomic regions relevant to neuronal regulation and disease-associated processes.
The workflow begins with genomic DNA, followed by treatment with T4 phage β-glucosyltransferase to add glucose to 5-hmC. The treated DNA then undergoes restriction-enzyme digestion, and the protected sequences are quantified. Comparing the resulting signal with the digestion-based distinction between protected and unmodified DNA supports measurement of hydroxymethylation patterns.
The assay provides quantitative information about protected DNA sequences, which can be used to estimate 5-hmC patterns in genomic DNA. Depending on the selected analysis, the outcome may describe global hydroxymethylation or signal from particular loci. These measurements support comparisons among samples and help identify epigenetic changes associated with biological state or disease-related conditions.
5-hmC is especially abundant and dynamically regulated in the nervous system, making its distribution relevant to neuronal biology. The kit supports investigations of neuronal development, brain aging, disease-associated epigenetic changes, and gene regulation by measuring hydroxymethylation across genomic DNA or at selected loci. Results can therefore connect DNA modification patterns with changing neural states.