Substrate for detection of mammalian 5-C-DNA methyltransferase

摘要

A substrate selective for detection of mammalian 5-C-DNA methyltransferase in the presence of bacterial 5-C-DNA methyltransferase, said substrate comprising oligomeric DNA which contains at least one 5-methylcytosine residue, and at least one cytosine or 5-fluorocytosine residue, each of which are followed in linkage to a guanine residue. The invention also includes a method for measuring the presence of mammalian 5-C-DNA methyltransferase which comprises contacting a sample containing 5-C-DNA methyl transferase with the substrate and also includes a method for inhibiting mammalian 5-C-DNA methyltransferase which comprises contacting a sample containing 5-C-DNA methyl transferase with the substrate.