16S rRNA (guanine1207-N2)-methyltransferase

16S rRNA (guanine¹²⁰⁷-N²)-methyltransferase (EC 2.1.1.172, m2G1207 methyltransferase) is an enzyme with systematic name S-adenosyl-L-methionine:16S rRNA (guanine¹²⁰⁷-N²)-methyltransferase.^[1]^[2] This enzyme catalyses the following chemical reaction

S-adenosyl-L-methionine + guanine¹²⁰⁷ in 16S rRNA

\rightleftharpoons

S-adenosyl-L-homocysteine + N²-methylguanine¹²⁰⁷ in 16S rRNA

The enzyme reacts well with 30S subunits reconstituted from 16S RNA transcripts and 30S proteins but is almost inactive with the corresponding free RNA.

References

↑ Tscherne, J.S., Nurse, K., Popienick, P. and Ofengand, J. (1999). "Purification, cloning, and characterization of the 16 S RNA m2G1207 methyltransferase from Escherichia coli". J. Biol. Chem. 274: 924–929. doi:10.1074/jbc.274.2.924. PMID 9873033.
↑ Sunita, S., Purta, E., Durawa, M., Tkaczuk, K.L., Swaathi, J., Bujnicki, J.M. and Sivaraman, J. (2007). "Functional specialization of domains tandemly duplicated within 16S rRNA methyltransferase RsmC". Nucleic Acids Res. 35: 4264–4274. doi:10.1093/nar/gkm411. PMID 17576679.

External links

16S rRNA (guanine1207-N2)-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.