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Literature summary for 2.1.1.250 extracted from

  • Soares, J.; Zhang, L.; Pitsch, R.; Kleinholz, N.; Jones, R.; Wolff, J.; Amster, J.; Green-Church, K.; Krzyck, J.
    The residue mass of L-pyrrolysine in three distinct methylamine methyltransferases (2005), J. Biol. Chem., 280, 36962-36969.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
gene mttB, single gene Methanosarcina barkeri

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
trimethylamine + a [Co(I) trimethylamine-specific corrinoid protein] Methanosarcina barkeri
-
a [methyl-Co(III) methylamine-specific corrinoid protein] + dimethylamine
-
?
trimethylamine + a [Co(I) trimethylamine-specific corrinoid protein] Methanosarcina barkeri MS / DSM 800
-
a [methyl-Co(III) methylamine-specific corrinoid protein] + dimethylamine
-
?

Organism

Organism UniProt Comment Textmining
Methanosarcina barkeri O93658 gene mttB
-
Methanosarcina barkeri MS / DSM 800 O93658 gene mttB
-

Purification (Commentary)

Purification (Comment) Organism
native enzyme as the MttB-MttC complex by repeated gel filtration Methanosarcina barkeri

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
trimethylamine + a [Co(I) trimethylamine-specific corrinoid protein]
-
Methanosarcina barkeri a [methyl-Co(III) methylamine-specific corrinoid protein] + dimethylamine
-
?
trimethylamine + a [Co(I) trimethylamine-specific corrinoid protein]
-
Methanosarcina barkeri MS / DSM 800 a [methyl-Co(III) methylamine-specific corrinoid protein] + dimethylamine
-
?

Subunits

Subunits Comment Organism
More mass spectrometric structure analysis, overview, primary structure of MttB Methanosarcina barkeri

Synonyms

Synonyms Comment Organism
MttB
-
Methanosarcina barkeri
TMA methyltransferase
-
Methanosarcina barkeri

General Information

General Information Comment Organism
additional information single in-frame amber UAG codons are found in the genes encoding MtmB, MtbB, or MttB, the methyltransferases initiating methane formation from monomethylamine, dimethylamine, or trimethylamine, respectively, in certain Archaea. The amber codon codes for pyrrolysine, the 22nd genetically encoded amino acid found in nature Methanosarcina barkeri