23S rRNA (guanosine2251-2'-O)-methyltransferase

23S rRNA (guanosine-2'-O)-methyltransferase (EC 2.1.1.185, rlmB (gene), yifH (gene)) is an enzyme with systematic name S-adenosyl-L-methionine:23S rRNA (guanosine-2'-O-)-methyltransferase. This enzyme catalyses the following chemical reaction

S-adenosyl-L-methionine + guanosine in 23S rRNA

\rightleftharpoons

S-adenosyl-L-homocysteine + 2'-O-methylguanosine in 23S rRNA

The enzyme catalyses the methylation of guanosine.

References

Lövgren JM, Wikström PM (December 2001). "The rlmB gene is essential for formation of Gm2251 in 23S rRNA but not for ribosome maturation in Escherichia coli". Journal of Bacteriology. 183 (23): 6957–60. doi:10.1128/jb.183.23.6957-6960.2001. PMC 95539. PMID 11698387.
Michel G, Sauvé V, Larocque R, Li Y, Matte A, Cygler M (October 2002). "The structure of the RlmB 23S rRNA methyltransferase reveals a new methyltransferase fold with a unique knot". Structure. 10 (10): 1303–15. doi:10.1016/s0969-2126(02)00852-3. PMID 12377117.

External links

23S+rRNA+(guanosine2251-2'-O)-methyltransferase at the U.S. 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 Cyclopropane-fatty-acyl-phospholipid synthase

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

v t e Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list) EC7 Translocases (list)

Portal:

Biology

Category:

EC 2.1.1