Site-specific DNA-methyltransferase (cytosine-N4-specific) (, ''modification methylase'', ''restriction-modification system'', ''DNA
ytosine-N4ethyltransferase'', ''m4C-forming MTase'', ''S-adenosyl-L-methionine:DNA-cytosine 4-N-methyltransferase'') is an
enzyme
An enzyme () is a protein that acts as a biological catalyst by accelerating chemical reactions. The molecules upon which enzymes may act are called substrate (chemistry), substrates, and the enzyme converts the substrates into different mol ...
with
systematic name
A systematic name is a name given in a systematic way to one unique group, organism, object or chemical substance, out of a specific population or collection. Systematic names are usually part of a nomenclature.
A semisystematic name or semitrivi ...
''S-adenosyl-L-methionine:DNA-cytosine N4-methyltransferase''. This enzyme
catalyses the following
chemical reaction
A chemical reaction is a process that leads to the chemistry, chemical transformation of one set of chemical substances to another. When chemical reactions occur, the atoms are rearranged and the reaction is accompanied by an Gibbs free energy, ...
:
: S-adenosyl-L-methionine + DNA cytosine
S-adenosyl-L-homocysteine + DNA N4-methylcytosine
This is a large group of enzymes.
See also
*
DNA methyltransferase
In biochemistry, the DNA methyltransferase (DNA MTase, DNMT) family of enzymes catalyze the transfer of a methyl group to DNA. DNA methylation serves a wide variety of biological functions. All the known DNA methyltransferases use S-adenosyl ...
References
External links
*
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EC 2.1.1