Bisulfite
Genome methylation profiling by sequencing DNA fragments bisulfite treated to convert non-methylated C’s into U’s
Using bisulfite conversion, we can determine the positions of all methylated C’s in the genome. This chemical process modifies non-methylated C’s so that following PCR they are sequenced as A’s. By mapping these reads back to the genome using highly-specialized alignment tools, we can observe originally methylated C’s by looking for columns of our bisulfite-induced C to A “mismatches.”
DNA methylation is just one epigenomic modification that can be revealed by
sequencing. For histone methylation, see ChIP-Seq.






