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Literature summary extracted from

  • Coffin, S.R.; Reich, N.O.
    Modulation of Escherichia coli DNA methyltransferase activity by biologically derived GATC-flanking sequences (2008), J. Biol. Chem., 283, 20106-20116.
    View publication on PubMedView publication on EuropePMC

Cloned(Commentary)

EC Number Cloned (Comment) Organism
2.1.1.72 expressed in Escherichia coli XL2-Blue cells Escherichia coli

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2.1.1.72 0.0000227
-
 DNA adenine using the DNA sequence 5'-GCATACCCGATCAAGTAAATG-3', wild type enzyme, in 20 mM potassium phosphate, pH 7.5, 200 mM NaCl, 0.2 mM EDTA, 0.2 mg/ml bovine serum albumin, 2 mM dithiothreitol, 10% (v/v) glycerol, at 22°C Escherichia coli
2.1.1.72 0.0000809
-
 DNA adenine using the DNA sequence 5'-GCATAAAAGATCGTCTAAATG-3', wild type enzyme, in 20 mM potassium phosphate, pH 7.5, 200 mM NaCl, 0.2 mM EDTA, 0.2 mg/ml bovine serum albumin, 2 mM dithiothreitol, 10% (v/v) glycerol, at 22°C Escherichia coli

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
2.1.1.72 S-adenosyl-L-methionine + DNA adenine Escherichia coli Dam methylates the N-6 position of the adenine in the sequence 5'-GATC-3', Dam shows a dramatic preference for the in vitro methylation of certain GATC sequences in plasmids and PCR-derived DNAfragments S-adenosyl-L-homocysteine + DNA 6-methyladenine
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
2.1.1.72 Escherichia coli P0AEE8
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
2.1.1.72 phosphocellulose column chromatography and Blue Sepharose column chromatography Escherichia coli

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.1.1.72 S-adenosyl-L-methionine + DNA adenine Dam methylates the N-6 position of the adenine in the sequence 5'-GATC-3', Dam shows a dramatic preference for the in vitro methylation of certain GATC sequences in plasmids and PCR-derived DNAfragments Escherichia coli S-adenosyl-L-homocysteine + DNA 6-methyladenine
-
 ?

Synonyms

EC Number Synonyms Comment Organism
2.1.1.72 Dam
-
 Escherichia coli
2.1.1.72 DNA adenine methyltransferase
-
 Escherichia coli

Turnover Number [1/s]

EC Number Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
2.1.1.72 0.0038
-
 DNA adenine using the DNA sequence 5'-GCATACCCGATCAAGTAAATG-3', wild type enzyme, in 20 mM potassium phosphate, pH 7.5, 200 mM NaCl, 0.2 mM EDTA, 0.2 mg/ml bovine serum albumin, 2 mM dithiothreitol, 10% (v/v) glycerol, at 22°C Escherichia coli
2.1.1.72 0.015
-
 DNA adenine using the DNA sequence 5'-GCATAAAAGATCGTCTAAATG-3', wild type enzyme, in 20 mM potassium phosphate, pH 7.5, 200 mM NaCl, 0.2 mM EDTA, 0.2 mg/ml bovine serum albumin, 2 mM dithiothreitol, 10% (v/v) glycerol, at 22°C Escherichia coli

kcat/KM [mM/s]

EC Number kcat/KM Value [1/mMs-1] kcat/KM Value Maximum [1/mMs-1] Substrate Comment Organism Structure
2.1.1.72 168
-
 DNA adenine using the DNA sequence 5'-GCATACCCGATCAAGTAAATG-3', wild type enzyme, in 20 mM potassium phosphate, pH 7.5, 200 mM NaCl, 0.2 mM EDTA, 0.2 mg/ml bovine serum albumin, 2 mM dithiothreitol, 10% (v/v) glycerol, at 22°C Escherichia coli
2.1.1.72 187
-
 DNA adenine using the DNA sequence 5'-GCATAAAAGATCGTCTAAATG-3', wild type enzyme, in 20 mM potassium phosphate, pH 7.5, 200 mM NaCl, 0.2 mM EDTA, 0.2 mg/ml bovine serum albumin, 2 mM dithiothreitol, 10% (v/v) glycerol, at 22°C Escherichia coli