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Literature summary for 2.1.1.107 extracted from

  • Araya, M.A.; Tantalean, J.C.; Perez, J.M.; Fuentes, D.E.; Calderon, I.L.; Saavedra, C.P.; Burra, R.; Chasteen, T.G.; Vasquez, C.C.
    Cloning, purification and characterization of Geobacillus stearothermophilus V uroporphyrinogen-III C-methyltransferase: evaluation of its role in resistance to potassium tellurite in Escherichia coli (2009), Res. Microbiol., 160, 125-133.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
gene cobA, expression in Escherichia coli strain JM109(DE3), the recombinant enzyme renders the bacteria morre resistant to potassium tellurite and potassium tellurate Geobacillus stearothermophilus

Protein Variants

Protein Variants Comment Organism
G12A site-directed mutagenesis of cobA abolishes the tellurite resistance of the mesophilic, heterologous host Escherichia coli and the SUMT activity in vitro. Cells overexpressing SUMT G12A show 7fold less tolerance to K2TeO3 as compared to that exhibit by cells expressing the wild-type methyltransferase Geobacillus stearothermophilus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
30000
-
2 * 30000, recombinant enzyme, SDS-PAGE Geobacillus stearothermophilus
60000
-
recombinant enzyme, native PAGE and gel filtration Geobacillus stearothermophilus

Organism

Organism UniProt Comment Textmining
Geobacillus stearothermophilus Q6TA16 gene cobA
-
Geobacillus stearothermophilus V Q6TA16 gene cobA
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
uroporphyrinogen III + S-adenosyl-L-methionine the enzyme binds S-adenosyl-L-methionine and catalyzes the production of III methyl uroporphyrinogen in vitro Geobacillus stearothermophilus precorrin-2 + S-adenosyl-L-homocysteine
-
?
uroporphyrinogen III + S-adenosyl-L-methionine the enzyme binds S-adenosyl-L-methionine and catalyzes the production of III methyl uroporphyrinogen in vitro Geobacillus stearothermophilus V precorrin-2 + S-adenosyl-L-homocysteine
-
?

Subunits

Subunits Comment Organism
homodimer 2 * 30000, recombinant enzyme, SDS-PAGE Geobacillus stearothermophilus

Synonyms

Synonyms Comment Organism
SUMT
-
Geobacillus stearothermophilus

Cofactor

Cofactor Comment Organism Structure
S-adenosyl-L-methionine
-
Geobacillus stearothermophilus

General Information

General Information Comment Organism
physiological function the role of SUMT methyltransferase in tellurite(ate) detoxification is not related to tellurium volatilization Geobacillus stearothermophilus