27S pre-rRNA (guanosine2922-2'-O)-methyltransferase

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27S pre-rRNA (guanosine2922-2'-O)-methyltransferase
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EC no. 2.1.1.167
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27S pre-rRNA (guanosine2922-2'-O)-methyltransferase (EC 2.1.1.167, Spb1p (gene), YCL054W (gene)) is an enzyme with systematic name S-adenosyl-L-methionine:27S pre-rRNA (guanosine2922-2'-O-)-methyltransferase. [1] [2] This enzyme catalyses the following chemical reaction

S-adenosyl-L-methionine + guanosine 2922 in 27S pre-rRNA S-adenosyl-L-homocysteine + 2'-O-methylguanosine2922 in 27S pre-rRNA

Spb1p is a site-specific 2'-O-ribose RNA methyltransferase that catalyses the formation of 2'-O-methylguanosine2922.

Related Research Articles

<span class="mw-page-title-main">Methyltransferase</span> Group of methylating enzymes

Methyltransferases are a large group of enzymes that all methylate their substrates but can be split into several subclasses based on their structural features. The most common class of methyltransferases is class I, all of which contain a Rossmann fold for binding S-Adenosyl methionine (SAM). Class II methyltransferases contain a SET domain, which are exemplified by SET domain histone methyltransferases, and class III methyltransferases, which are membrane associated. Methyltransferases can also be grouped as different types utilizing different substrates in methyl transfer reactions. These types include protein methyltransferases, DNA/RNA methyltransferases, natural product methyltransferases, and non-SAM dependent methyltransferases. SAM is the classical methyl donor for methyltransferases, however, examples of other methyl donors are seen in nature. The general mechanism for methyl transfer is a SN2-like nucleophilic attack where the methionine sulfur serves as the leaving group and the methyl group attached to it acts as the electrophile that transfers the methyl group to the enzyme substrate. SAM is converted to S-Adenosyl homocysteine (SAH) during this process. The breaking of the SAM-methyl bond and the formation of the substrate-methyl bond happen nearly simultaneously. These enzymatic reactions are found in many pathways and are implicated in genetic diseases, cancer, and metabolic diseases. Another type of methyl transfer is the radical S-Adenosyl methionine (SAM) which is the methylation of unactivated carbon atoms in primary metabolites, proteins, lipids, and RNA.

23S rRNA (uridine2552-2'-O)-methyltransferase is an enzyme with systematic name S-adenosyl-L-methionine:23S rRNA (uridine2552-2'-O-)-methyltransferase. This enzyme catalyses the following chemical reaction

23S rRNA (guanine2445-N2)-methyltransferase (EC 2.1.1.173, ycbY (gene), rlmL (gene)) is an enzyme with systematic name S-adenosyl-L-methionine:23S rRNA (guanine2445-N2)-methyltransferase. This enzyme catalyses the following chemical reaction

23S rRNA (guanine1835-N2)-methyltransferase (EC 2.1.1.174, ygjO (gene), rlmG (gene), ribosomal RNA large subunit methyltransferase G) is an enzyme with systematic name S-adenosyl-L-methionine:23S rRNA (guanine1835-N2)-methyltransferase. This enzyme catalyses the following chemical reaction

16S rRNA (adenine1408-N1)-methyltransferase (EC 2.1.1.180, kanamycin-apramycin resistance methylase, 16S rRNA:m1A1408 methyltransferase, KamB, NpmA, 16S rRNA m1A1408 methyltransferase) is an enzyme with systematic name S-adenosyl-L-methionine:16S rRNA (adenine1408-N1)-methyltransferase. This enzyme catalyses the following chemical reaction

23S rRNA (adenine1618-N6)-methyltransferase (EC 2.1.1.181, rRNA large subunit methyltransferase F, YbiN protein, rlmF (gene), m6A1618 methyltransferase) is an enzyme with systematic name S-adenosyl-L-methionine:23S rRNA (adenine1618-N6)-methyltransferase. This enzyme catalyses the following chemical reaction

18S rRNA (adenine1779-N6/adenine1780-N6)-dimethyltransferase (EC 2.1.1.183, 18S rRNA dimethylase Dim1p, Dim1p, ScDim1, m2(6)A dimethylase, KIDIM1) is an enzyme with systematic name S-adenosyl-L-methionine:18S rRNA (adenine1779-N6/adenine1780-N6)-dimethyltransferase. This enzyme catalyses the following chemical reaction

23S rRNA (guanosine2251-2'-O)-methyltransferase is an enzyme with systematic name S-adenosyl-L-methionine:23S rRNA (guanosine2251-2'-O-)-methyltransferase. This enzyme catalyses the following chemical reaction

23S rRNA (cytidine2498-2'-O)-methyltransferase is an enzyme with systematic name S-adenosyl-L-methionine:23S rRNA (cytidine2498-2'-O-)-methyltransferase. This enzyme catalyses the following chemical reaction

23S rRNA (guanine745-N1)-methyltransferase (EC 2.1.1.187, Rlma(I), Rlma1, 23S rRNA m1G745 methyltransferase, YebH, RlmAI methyltransferase, ribosomal RNA(m1G)-methylase, rRNA(m1G)methylase, RrmA, 23S rRNA:m1G745 methyltransferase) is an enzyme with systematic name S-adenosyl-L-methionine:23S rRNA (guanine745-N1)-methyltransferase. This enzyme catalyses the following chemical reaction

23S rRNA (guanine748-N1)-methyltransferase (EC 2.1.1.188, Rlma(II), Rlma2, 23S rRNA m1G748 methyltransferase, RlmaII, Rlma II, tylosin-resistance methyltransferase RlmA(II), TlrB, rRNA large subunit methyltransferase II) is an enzyme with systematic name S-adenosyl-L-methionine:23S rRNA (guanine748-N1)-methyltransferase. This enzyme catalyses the following chemical reaction

23S rRNA (cytosine1962-C5)-methyltransferase (EC 2.1.1.191, RlmI, rRNA large subunit methyltransferase I, YccW) is an enzyme with systematic name S-adenosyl-L-methionine:23S rRNA (cytosine1962-C5)-methyltransferase. This enzyme catalyses the following chemical reaction

TRNA (cytidine32/uridine32-2'-O)-methyltransferase (EC 2.1.1.200, YfhQ, tRNA:Cm32/Um32 methyltransferase, TrMet(Xm32), TrmJ) is an enzyme with systematic name S-adenosyl-L-methionine:tRNA (cytidine32/uridine32-2'-O)-methyltransferase. This enzyme catalyses the following chemical reaction

tRNA (cytidine56-2'-O)-methyltransferase is an enzyme with systematic name S-adenosyl-L-methionine:tRNA (cytidine56-2'-O)-methyltransferase. This enzyme catalyses the following chemical reaction

23S rRNA (uridine2479-2'-O)-methyltransferase is an enzyme with systematic name S-adenosyl-L-methionine:23S rRNA (uridine2479-2'-O)-methyltransferase. This enzyme catalyses the following chemical reaction

23S rRNA (guanine2535-N1)-methyltransferase (EC 2.1.1.209, AviRa) is an enzyme with systematic name S-adenosyl-L-methionine:23S rRNA (guanine2535-N1)-methyltransferase. This enzyme catalyses the following chemical reaction

2,7,4'-Trihydroxyisoflavanone 4'-O-methyltransferase is an enzyme with systematic name S-adenosyl-L-methionine:2,7,4'-trihydroxyisoflavanone 4'-O-methyltransferase . This enzyme catalyses the following chemical reaction

23S rRNA (cytidine1920-2'-O)-methyltransferase is an enzyme with systematic name S-adenosyl-L-methionine:23S rRNA (cytidine1920-2'-O)-methyltransferase. This enzyme catalyses the following chemical reaction

16S rRNA (cytidine1409-2'-O)-methyltransferase (EC 2.1.1.227, TlyA) is an enzyme with systematic name S-adenosyl-L-methionine:16S rRNA (cytidine1409-2'-O)-methyltransferase. This enzyme catalyses the following chemical reaction

16S rRNA (guanine1516-N2)-methyltransferase (EC 2.1.1.242, yhiQ (gene), rsmJ (gene), m2G1516 methyltransferase) is an enzyme with systematic name S-adenosyl-L-methionine:16S rRNA (guanine1516-N2)-methyltransferase. This enzyme catalyses the following chemical reaction

References

  1. ↑ Lapeyre B, Purushothaman SK (November 2004). "Spb1p-directed formation of Gm2922 in the ribosome catalytic center occurs at a late processing stage". Molecular Cell. 16 (4): 663–9. doi: 10.1016/j.molcel.2004.10.022 . PMID   15546625.
  2. ↑ Bonnerot C, Pintard L, Lutfalla G (November 2003). "Functional redundancy of Spb1p and a snR52-dependent mechanism for the 2'-O-ribose methylation of a conserved rRNA position in yeast". Molecular Cell. 12 (5): 1309–15. doi: 10.1016/S1097-2765(03)00435-0 . PMID   14636587.
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