Enzymes
| UniProtKB help_outline | 1 proteins |
| Enzyme class help_outline |
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Reaction participants Show >> << Hide
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Namehelp_outline
cytidine2278 in 25S rRNA
Identifier
RHEA-COMP:10391
Reactive part
help_outline
- Name help_outline CMP residue Identifier CHEBI:82748 Charge -1 Formula C9H11N3O7P Positionhelp_outline 2278 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
5-methylcytidine2278 in 25S rRNA
Identifier
RHEA-COMP:10392
Reactive part
help_outline
- Name help_outline 5-methylcytidine 5'-phosphate residue Identifier CHEBI:74483 Charge -1 Formula C10H13N3O7P Positionhelp_outline 2278 SMILEShelp_outline C1=C(C(=NC(N1[C@@H]2O[C@H](COP(*)(=O)[O-])[C@H]([C@H]2O)O*)=O)N)C 2D coordinates Mol file for the small molecule Search links Involved in 35 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:43180 | RHEA:43181 | RHEA:43182 | RHEA:43183 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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| MetaCyc help_outline |
Related reactions help_outline
More general form(s) of this reaction
Publications
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Yeast Nop2 and Rcm1 methylate C2870 and C2278 of the 25S rRNA, respectively.
Sharma S., Yang J., Watzinger P., Kotter P., Entian K.D.
Yeast 25S rRNA was reported to contain a single cytosine methylation (m(5)C). In the present study using a combination of RP-HPLC, mung bean nuclease assay and rRNA mutagenesis, we discovered that instead of one, yeast contains two m(5)C residues at position 2278 and 2870. Furthermore, we identifi ... >> More
Yeast 25S rRNA was reported to contain a single cytosine methylation (m(5)C). In the present study using a combination of RP-HPLC, mung bean nuclease assay and rRNA mutagenesis, we discovered that instead of one, yeast contains two m(5)C residues at position 2278 and 2870. Furthermore, we identified and characterized two putative methyltransferases, Rcm1 and Nop2 to be responsible for these two cytosine methylations, respectively. Both proteins are highly conserved, which correlates with the presence of two m(5)C residues at identical positions in higher eukaryotes, including humans. The human homolog of yeast Nop2, p120 has been discovered to be upregulated in various cancer tissues, whereas the human homolog of Rcm1, NSUN5 is completely deleted in the William's-Beuren Syndrome. The substrates and function of both human homologs remained unknown. In the present study, we also provide insights into the significance of these two m(5)C residues. The loss of m(5)C2278 results in anisomycin hypersensitivity, whereas the loss of m(5)C2870 affects ribosome synthesis and processing. Establishing the locations and enzymes in yeast will not only help identifying the function of their homologs in higher organisms, but will also enable understanding the role of these modifications in ribosome function and architecture. << Less
Nucleic Acids Res. 41:9062-9076(2013) [PubMed] [EuropePMC]
This publication is cited by 4 other entries.