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EC 2.1.1.72 Details
EC number
2.1.1.72
Accepted name
site-specific DNA-methyltransferase (adenine-specific)
Reaction
S-adenosyl-L-methionine + adenine in DNA = S-adenosyl-L-homocysteine + N6-methyladenine in DNA
Other name(s)
modification methylase, restriction-modification system
Systematic name
S-adenosyl-L-methionine:adenine in DNA N6-methyltransferase
CAS registry number
69553-52-2
Comment
This is a large group of enzymes, most of which form so-called ’restriction-modification systems’ with nucleases that possess similar site specificity [the nucleases are listed as either EC 3.1.21.3 (type 1 site-specific deoxyribonuclease), EC 3.1.21.4 (type II site-specific deoxyribonuclease) or EC 3.1.21.5 (type III site-specific deoxyribonuclease)]. A complete listing of all of these enzymes has been produced by R.J. Roberts and is available on-line at http://rebase.neb.com/rebase/rebase.html.
History
created 1984
EC Tree
2.1.1.23 created 1972, modified 1976, modified 1983, deleted 1999
2.1.1.24 created 1972, modified 1983, modified 1989, deleted 1992
2.1.1.30 created 1972, deleted 1981
2.1.1.58 created 1981, deleted 1984
2.1.1.73 created 1984, deleted 2003
2.1.1.81 created 1989, deleted 1990
2.1.1.134 created 1999, deleted 2002
2.1.1.135 created 1999, deleted 2003
2.1.1.138 created 2000, deleted 2003