Reaction participants Show >> << Hide
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Namehelp_outline
cytidine1402 in 16S rRNA
Identifier
RHEA-COMP:10286
Reactive part
help_outline
- Name help_outline CMP residue Identifier CHEBI:82748 Charge -1 Formula C9H11N3O7P Positionhelp_outline 1402 SMILEShelp_outline Nc1ccn([C@@H]2O[C@H](COP([O-])(-*)=O)[C@@H](O-*)[C@H]2O)c(=O)n1 2D coordinates Mol file for the small molecule Search links Involved in 66 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 904 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
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Namehelp_outline
N4-methylcytidine1402 in 16S rRNA
Identifier
RHEA-COMP:10287
Reactive part
help_outline
- Name help_outline N4-methylcytidine 5'-phosphate residue Identifier CHEBI:74506 Charge -1 Formula C10H13N3O7P Positionhelp_outline 1402 SMILEShelp_outline C1=CC(=NC(N1[C@@H]2O[C@H](COP(*)(=O)[O-])[C@H]([C@H]2O)O*)=O)NC 2D coordinates Mol file for the small molecule Search links Involved in 3 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 827 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 9,521 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:42928 | RHEA:42929 | RHEA:42930 | RHEA:42931 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Related reactions help_outline
More general form(s) of this reaction
Publications
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Fine-tuning of the ribosomal decoding center by conserved methyl-modifications in the Escherichia coli 16S rRNA.
Kimura S., Suzuki T.
In bacterial 16S rRNAs, methylated nucleosides are clustered within the decoding center, and these nucleoside modifications are thought to modulate translational fidelity. The N(4), 2'-O-dimethylcytidine (m(4)Cm) at position 1402 of the Escherichia coli 16S rRNA directly interacts with the P-site ... >> More
In bacterial 16S rRNAs, methylated nucleosides are clustered within the decoding center, and these nucleoside modifications are thought to modulate translational fidelity. The N(4), 2'-O-dimethylcytidine (m(4)Cm) at position 1402 of the Escherichia coli 16S rRNA directly interacts with the P-site codon of the mRNA. The biogenesis and function of this modification remain unclear. We have identified two previously uncharacterized genes in E. coli that are required for m(4)Cm formation. mraW (renamed rsmH) and yraL (renamed rsmI) encode methyltransferases responsible for the N(4) and 2'-O-methylations of C1402, respectively. Recombinant RsmH and RsmI proteins employed the 30S subunit (not the 16S rRNA) as a substrate to reconstitute m(4)Cm1402 in the presence of S-adenosylmethionine (Ado-Met) as the methyl donor, suggesting that m(4)Cm1402 is formed at a late step during 30S assembly in the cell. A luciferase reporter assay indicated that the lack of N(4) methylation of C1402 increased the efficiency of non-AUG initiation and decreased the rate of UGA read-through. These results suggest that m(4)Cm1402 plays a role in fine-tuning the shape and function of the P-site, thus increasing decoding fidelity. << Less
Nucleic Acids Res. 38:1341-1352(2010) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.