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2.1.1.167: 27S pre-rRNA (guanosine2922-2'-O)-methyltransferase

This is an abbreviated version!
For detailed information about 27S pre-rRNA (guanosine2922-2'-O)-methyltransferase, go to the full flat file.

Word Map on EC 2.1.1.167

Reaction

S-adenosyl-L-methionine
+
guanosine2922 in 27S pre-rRNA
=
S-adenosyl-L-homocysteine
+
2'-O-methylguanosine2922 in 27S pre-rRNA

Synonyms

Spb1p

ECTree

     2 Transferases
         2.1 Transferring one-carbon groups
             2.1.1 Methyltransferases
                2.1.1.167 27S pre-rRNA (guanosine2922-2'-O)-methyltransferase

Natural Substrates Products

Natural Substrates Products on EC 2.1.1.167 - 27S pre-rRNA (guanosine2922-2'-O)-methyltransferase

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NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
S-adenosyl-L-methionine + guanosine2922 in 27S pre-rRNA
S-adenosyl-L-homocysteine + 2'-O-methylguanosine2922 in 27S pre-rRNA
show the reaction diagram
-
Spb1p is a site-specific 2'-O-ribose RNA MTase that catalyzes the formation of Gm2922, a universally conserved position of the catalytic center of the ribosome that is essential for translation. The enzyme is required for proper assembly of pre-ribosomal particles during the biogenesis of the 60S ribosomal subunit. Specifically methylates the guanosine in position 2922 of the 25S rRNA at the stage of 27S pre-rRNA maturation. Methylates also the uridine in position 2921 in the absence of methylation of this residue guided by snoRNA snR52 at the stage of 35S pre-rRNA maturation. 2'-O-methylguanosine2922 appears at a late processing stage, during the maturation of the 27S pre-rRNA
-
-
?
S-adenosyl-L-methionine + uridine2918 in 25S rRNA
S-adenosyl-L-homocysteine + 2'-O-methyluridine2918 in 25S rRNA
show the reaction diagram
additional information
?
-