Reaction participants Show >> << Hide
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Namehelp_outline
guanosine2553 in 23S rRNA
Identifier
RHEA-COMP:18248
Reactive part
help_outline
- Name help_outline GMP residue Identifier CHEBI:74269 Charge -1 Formula C10H11N5O7P Positionhelp_outline 2553 SMILEShelp_outline C1(=O)NC(=NC2=C1N=CN2[C@@H]3O[C@H](COP(=O)(*)[O-])[C@@H](O*)[C@H]3O)N 2D coordinates Mol file for the small molecule Search links Involved in 42 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline S-adenosyl-L-methionine Identifier CHEBI:59789 Charge 1 Formula C15H23N6O5S InChIKeyhelp_outline MEFKEPWMEQBLKI-AIRLBKTGSA-O SMILEShelp_outline C[S+](CC[C@H]([NH3+])C([O-])=O)C[C@H]1O[C@H]([C@H](O)[C@@H]1O)n1cnc2c(N)ncnc12 2D coordinates Mol file for the small molecule Search links Involved in 868 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
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Namehelp_outline
2'-O-methylguanosine2553 in 23S rRNA
Identifier
RHEA-COMP:18249
Reactive part
help_outline
- Name help_outline 2'-O-methylguanosine 5'-phosphate residue Identifier CHEBI:74445 Charge -1 Formula C11H13N5O7P Positionhelp_outline 2553 SMILEShelp_outline C1(=O)NC(=NC2=C1N=CN2[C@@H]3O[C@H](COP(=O)(*)[O-])[C@@H](O*)[C@H]3OC)N 2D coordinates Mol file for the small molecule Search links Involved in 9 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H+ Identifier CHEBI:15378 Charge 1 Formula H InChIKeyhelp_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILEShelp_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,431 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline S-adenosyl-L-homocysteine Identifier CHEBI:57856 Charge 0 Formula C14H20N6O5S InChIKeyhelp_outline ZJUKTBDSGOFHSH-WFMPWKQPSA-N SMILEShelp_outline Nc1ncnc2n(cnc12)[C@@H]1O[C@H](CSCC[C@H]([NH3+])C([O-])=O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 792 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:73759 | RHEA:73760 | RHEA:73761 | RHEA:73762 | |
|---|---|---|---|---|
| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
| UniProtKB help_outline |
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Related reactions help_outline
More general form(s) of this reaction
Publications
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The Bacillus subtilis open reading frame ysgA encodes the SPOUT methyltransferase RlmP forming 2'-O-methylguanosine at position 2553 in the A-loop of 23S rRNA.
Roovers M., Labar G., Wolff P., Feller A., Van Elder D., Soin R., Gueydan C., Kruys V., Droogmans L.
A previous bioinformatic analysis predicted that the <i>ysgA</i> open reading frame of <i>Bacillus subtilis</i> encodes an RNA methyltransferase of the SPOUT superfamily. Here we show that YsgA is the 2'-<i>O</i>-methyltransferase that targets position G2553 (<i>Escherichia coli</i> numbering) of ... >> More
A previous bioinformatic analysis predicted that the <i>ysgA</i> open reading frame of <i>Bacillus subtilis</i> encodes an RNA methyltransferase of the SPOUT superfamily. Here we show that YsgA is the 2'-<i>O</i>-methyltransferase that targets position G2553 (<i>Escherichia coli</i> numbering) of the A-loop of 23S rRNA. This was shown by a combination of biochemical and mass spectrometry approaches using both rRNA extracted from <i>B. subtilis</i> wild-type or <i>ΔysgA</i> cells and in vitro synthesized rRNA. When the target G2553 is mutated, YsgA is able to methylate the ribose of adenosine. However, it cannot methylate cytidine nor uridine. The enzyme modifies free 23S rRNA but not the fully assembled ribosome nor the 50S subunit, suggesting that the modification occurs early during ribosome biogenesis. Nevertheless, ribosome subunits assembly is unaffected in a <i>B. subtilis ΔysgA</i> mutant strain. The crystal structure of the recombinant YsgA protein, combined with mutagenesis data, outlined in this article highlights a typical SPOUT fold preceded by an L7Ae/L30 (eL8/eL30 in a new nomenclature) amino-terminal domain. << Less
Comments
E. coli numbering for 23S rRNA