The pattern and extent of DNA methylation can significantly affect the success of restriction digestions
or bacterial transformations. Prokaryotic DNA may be methylated by host restriction/modification
systems, while eukaryotic DNA often is methylated i - [Read A practical guide to DNA methylation Promega PDF]
Protocol for the analysis of DNA methylation using bisulphite sequencing. Method allows precise analysis of methylation in a certain region by converting all nonmethylated cytosines into tymines, while methylated cytosines remain unchanged. This method requires small amount of genomic DNA and therefore seems to be very useful for the analysis of clinical samples, where the material amount is limited. - [Read Analysis of DNA Methylation using Bisulphite Sequencing Protocol]
This method allows precise analysis of methylation in a certain region by converting all nonmethylated cytosines into tymines, while methylated cytosines remain unchanged. Dr. A. Gratchev Methods.info - [Read Analysis of methylation using bisulphite sequencing]
Bisulfite Treatment of DNA Anderson Lab- http://www.mdanderson.org/departments/methylation/display.cfm?id=955D5740-37D4-444F-ACF0193F8EC3989B&method=displayFull&pn=A3F15D82-C9B4-41CD-BA4BE767E50A73D2
Adapted from Frommer et.al. Good protocol for bisulfite treatment of DNA. Includes tips on Methylation PCR for CpG methylation analysis. University of Texas M. D. Anderson Cancer Center - [Read Bisulfite Treatment of DNA for Methylation Analysis]
Protocol for bisulfite-PCR for restriction analysis and/or sequencing. Bisulfite-PCR followed by restriction is a rapid and semi-quantitative method of analyzing DNA methylation. The PCR products are also suitable for either direct sequencing or cloning and sequencing. The most important step here is primer selection. - [Read Bisulfite-PCR for Restriction Analysis and/or Sequencing Protocol]
Investigators can utilize X chromosome inactivation (methylation) to determine the clonality status of a tumor or premalignant lesion in females. The technique is based on a methylation-sensitive restriction enzyme and analysis of a polymorphic locus on the X chromosome. Clonal cell populations will show "loss" of the non-methylated allele after restriction digest. The assay can be performed on DNA recovered from microdissected samples. Both frozen tissue and fixed-embedded tissue can be used. - [Read Clonality - X Chromosome Inactivation Assay Protocol]
DNA-Methyltransferase Assay - Anderson Centre- http://www.mdanderson.org/departments/methylation/display.cfm?id=9B5B6082-C53A-4A86-BEE3EE149A52251E&method=displayFull&pn=A3F15D82-C9B4-41CD-BA4BE767E50A73D2
Novel strategy of immunizing a phosphorylated peptide or a synthetic phosphopeptide, which corresponds to the protein phosphorylated at a targeted residue. Method has been applied to the production of antibodies that can specifically recognize the other types of site-specific protein modification, such as acetylation, methylation, and proteolysis. - [Read Functional Analyses for Site-Specific Phosphorylation of a Target Protein in Cells]
Linkage analysis provides information on sugar type, ring size, and substitution positions for each monosaccharide. The method in this protocol, using NaOH as the base, is one of the simpler linkage analysis methods. It requires approximately 1-5 µg of carbohydrate. - [Read Linkage Analysis Using the NaOH Methylation Method Protocol]
Methylated CpG Island Amplification- http://www.mdanderson.org/departments/methylation/display.cfm?id=8A198378-986B-41FD-8778FA1399FBAB4D&method=displayFull&pn=A3F15D82-C9B4-41CD-BA4BE767E50A73D2
Methylation Specific PCR Protocol- http://www.mdanderson.org/departments/methylation/display.cfm?id=0CB11381-59AE-4D90-AC0B343F2D646EDD&method=displayFull&pn=A3F15D82-C9B4-41CD-BA4BE767E50A73D2
Protocol describes a recently developed method — methylation-specific digital karyotyping (MSDK) — that enables comprehensive and unbiased genome-wide DNA methylation analysis. Using a combination of a methylation-sensitive mapping enzyme (for example, AscI) and a fragmenting enzyme (for example, NlaIII), short sequence tags can be obtained and uniquely mapped to genome location. - [Read Methylation-Specific Digital Karyotyping Protocol]
Protocol presents a method that allows rapid determination of the monosaccharide composition of glycans, glycoproteins, and proteoglycans that contain (or are suspected to contain) phosphorylated sugars. (For samples that do not contain phosphorylated sugars see Monosaccharide Analysis by Methanolysis.) - [Read Monosaccharide Analysis of Phosphorylated Sugars by Methanolysis and Diazomethane Methylation]
Protocol for quantification of DNA methylation in electrofluidics chips. Describe Bio-COBRA, a modified protocol for Combined Bisulfite Restriction Analysis (COBRA), that incorporates an electrophoresis step in microfluidics chips. Microfluidics technology involves the handling of small amounts of liquid in miniaturized systems. - [Read Quantification of DNA Methylation in Electrofluidics Chips Protocol]