Dimethylamine-corrinoid protein Co-methyltransferase

Dimethylamine-corrinoid protein Co-methyltransferase (EC 2.1.1.249, mtbB (gene), dimethylamine methyltransferase) is an enzyme with systematic name dimethylamine:5-hydroxybenzimidazolylcobamide Co-methyltransferase.^[1]^[2]^[3] This enzyme catalyses the following chemical reaction

dimethylamine + [Co(I) dimethylamine-specific corrinoid protein]

\rightleftharpoons

[methyl-Co(III) dimethylamine-specific corrinoid protein] + methylamine

This enzyme is involved in methanogenesis from dimethylamine.

References

↑ Wassenaar, R.W., Keltjens, J.T., van der Drift, C. and Vogels, G.D. (1998). "Purification and characterization of dimethylamine:5-hydroxybenzimidazolyl-cobamide methyltransferase from Methanosarcina barkeri Fusaro". Eur. J. Biochem. 253: 692–697. doi:10.1046/j.1432-1327.1998.2530692.x. PMID 9654067.
↑ Ferguson, D.J., Jr., Gorlatova, N., Grahame, D.A. and Krzycki, J.A. (2000). "Reconstitution of dimethylamine:coenzyme M methyl transfer with a discrete corrinoid protein and two methyltransferases purified from Methanosarcina barkeri". J. Biol. Chem. 275: 29053–29060. doi:10.1074/jbc.m910218199. PMID 10852929.
↑ Krzycki, J.A. (2004). "Function of genetically encoded pyrrolysine in corrinoid-dependent methylamine methyltransferases". Curr. Opin. Chem. Biol. 8: 484–491. doi:10.1016/j.cbpa.2004.08.012. PMID 15450490.

External links

Dimethylamine---corrinoid protein Co-methyltransferase at the US National Library of Medicine Medical Subject Headings (MeSH)

Transferase: one carbon transferases (EC 2.1)

2.1.1: Methyl-

N-	Histamine N-methyltransferase Phenylethanolamine N-methyltransferase Amine N-methyltransferase Phosphatidylethanolamine N-methyltransferase

O-	5-hydroxyindole-O-methyltransferase/Acetylserotonin O-methyltransferase Catechol-O-methyl transferase

Homocysteine	Betaine-homocysteine methyltransferase Homocysteine methyltransferase Methionine synthase

Other	Phosphatidyl ethanolamine methyltransferase DNMT3B Histone methyltransferase Thymidylate synthase DNA methyltransferase Thiopurine methyltransferase

2.1.2: Hydroxymethyl-,
Formyl- and Related

Hydroxymethyltransferase	Serine hydroxymethyltransferase 3-methyl-2-oxobutanoate hydroxymethyltransferase

Formyltransferase	Phosphoribosylglycinamide formyltransferase Inosine monophosphate synthase

Other	Glutamate formimidoyltransferase Aminomethyltransferase

2.1.3: Carboxy-
and Carbamoyl

Carboxy	methylmalonyl-CoA carboxytransferase

Carbamoyl	Aspartate carbamoyltransferase Ornithine carbamoyltransferase Oxamate carbamoyltransferase Putrescine carbamoyltransferase 3-hydroxymethylcephem carbamoyltransferase Lysine carbamoyltransferase N-acetylornithine carbamoyltransferase

2.1.4: Amidine

Arginine:glycine amidinotransferase

Enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases(list) EC2 Transferases(list) EC3 Hydrolases(list) EC4 Lyases(list) EC5 Isomerases(list) EC6 Ligases(list)

This article is issued from Wikipedia - version of the Thursday, March 31, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.