title: DNA methylases of Escherichia coli K12. Evidence for changes in their state of association following purification.
mesh_terms: D000225:Adenine; D002499:Centrifugation, Density Gradient; D002845:Chromatography; D003596:Cytosine; D004247:DNA; D004589:Electrophoresis, Disc; D004926:Escherichia coli / Q000201:enzymology*; D006358:Hot Temperature; D046911:Macromolecular Substances; D008780:Methyltransferases / Q000302:isolation & purification*; D009994:Osmolar Concentration; D011489:Protein Denaturation; D014461:Ultracentrifugation
chemical_list: D046911:Macromolecular Substances; D003596:Cytosine; D004247:DNA; D008780:Methyltransferases; D000225:Adenine