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Literature summary extracted from

  • Maw, G.A.
    Thetin-homocysteine transmethylase: some further characteristics of the enzyme from rat liver (1958), Biochem. J., 70, 168-173.
    View publication on PubMedView publication on EuropePMC

Inhibitors

EC Number Inhibitors Comment Organism Structure
2.1.1.3 Ag2+
-
Rattus norvegicus
2.1.1.3 Co2+
-
Rattus norvegicus
2.1.1.3 Cu2+ 0.01 M, strong Rattus norvegicus
2.1.1.3 Fe2+
-
Rattus norvegicus
2.1.1.3 glycine betaine 0.1 M Rattus norvegicus
2.1.1.3 Hg2+ 0.01 M, strong Rattus norvegicus
2.1.1.3 hydroxylamine 0.01 M Rattus norvegicus
2.1.1.3 K+
-
Rattus norvegicus
2.1.1.3 Mn2+
-
Rattus norvegicus
2.1.1.3 additional information no inhibition by dimethylthetin, sulfocholine (up to 0.1 M), mercaptoethanol, cysteine, Na2SO4, Li+, Cs+, Ca2+, Mg2+, NaN3, NaCN, NaF, EDTA, semicarbazide, iodoacetate Rattus norvegicus
2.1.1.3 phenylhydrazine 0.01 M Rattus norvegicus
2.1.1.3 Rb+
-
Rattus norvegicus
2.1.1.3 Sodium mercaptoacetate
-
Rattus norvegicus
2.1.1.3 Zn2+ 0.01 M, strong Rattus norvegicus

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
2.1.1.3 additional information no activation by metal ions Rattus norvegicus

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
2.1.1.3 dimethylthetin + L-homocysteine Rattus norvegicus
-
S-methylthioglycolate + L-methionine
-
?

Organism

EC Number Organism UniProt Comment Textmining
2.1.1.3 Rattus norvegicus
-
-
-

Reaction

EC Number Reaction Comment Organism Reaction ID
2.1.1.3 dimethylsulfonioacetate + L-homocysteine = (methylsulfanyl)acetate + L-methionine mechanism Rattus norvegicus

Source Tissue

EC Number Source Tissue Comment Organism Textmining
2.1.1.3 liver
-
Rattus norvegicus
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.1.1.3 dimethylthetin + L-homocysteine
-
Rattus norvegicus S-methylthioglycolate + L-methionine
-
?
2.1.1.3 dimethylthetin + L-homocysteine i.e. dimethylsulfonioacetate, specific for L-homocysteine Rattus norvegicus S-methylthioglycolate + L-methionine i.e. methylthioacetate ?
2.1.1.3 additional information methyl group donors are ethylmethylthetin, dimethyl-alpha- and dimethyl-beta-propiothetin, ethylmethyl-beta-propiothetin, dimethyl-gamma-butyrothetin, methionine methylsulfonium, trimethylsulfonium, ethyldimethylsulfonium or butyldimethylsulfonium, no acceptors are cysteamine, 2-mercaptoethanol, DL-homocystine, sodium mercaptoacetate Rattus norvegicus ?
-
?

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
2.1.1.3 37
-
assay at Rattus norvegicus

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
2.1.1.3 7.4
-
assay at Rattus norvegicus