In enzymology, a rRNA (guanine-N1-)-methyltransferase (EC 2.1.1.51) is an enzyme that catalyzes the chemical reaction
| rRNA (guanine-N1-)-methyltransferase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 2.1.1.51 | ||||||||
| CAS no. | 50812-25-4 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
- S-adenosyl-L-methionine + rRNA S-adenosyl-L-homocysteine + rRNA containing N1-methylguanine
Thus, the two substrates of this enzyme are S-adenosyl methionine and rRNA, whereas its two products are S-adenosylhomocysteine and rRNA containing N1-methylguanine.
This enzyme belongs to the family of transferases, specifically those transferring one-carbon group methyltransferases. The systematic name of this enzyme class is S-adenosyl-L-methionine:rRNA (guanine-N1-)-methyltransferase. Other names in common use include ribosomal ribonucleate guanine 1-methyltransferase, and S-adenosyl-L-methionine:rRNA (guanine-1-N-)-methyltransferase.
Structural studies
editAs of late 2007, only one structure has been solved for this class of enzymes, with the PDB accession code 1P91.
References
edit- Isaksson LA (June 1973). "Partial purification of ribosomal RNA(m1G)- and rRNA(m2G)-methylases from Escherichia coli and demonstration of some proteins affecting their apparent activity". Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis. 312 (1): 122–33. doi:10.1016/0005-2787(73)90057-9. PMID 4580201.
