Small nucleolar RNA SNORD63

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Small nucleolar RNA SNORD63
RF00154.jpg
Identifiers
SymbolSNORD63
Alt. SymbolsU63
Rfam RF00154
Other data
RNA type Gene; snRNA; snoRNA; CD-box
Domain(s) Eukaryota
GO GO:0006396 GO:0005730
SO SO:0000593
PDB structures PDBe

In molecular biology, snoRNA U63 (also known as SNORD63) is a non-coding RNA (ncRNA) molecule which functions in the modification of other small nuclear RNAs (snRNAs). This type of modifying RNA is usually located in the nucleolus of the eukaryotic cell which is a major site of snRNA biogenesis. It is known as a small nucleolar RNA (snoRNA) and also often referred to as a guide RNA.

snoRNA U63 belongs to the C/D box class of snoRNAs which contain the conserved sequence motifs known as the C box (UGAUGA) and the D box (CUGA). Most of the members of the box C/D family function in directing site-specific 2'-O-methylation of substrate RNAs. [1]

snoRNA U63 was purified from HeLa cells by immunoprecipitation with antifibrillarin antibody. It is predicted to guide the 2'-O-ribose methylation of 28s ribosomal RNA (rRNA) at residue A4531. [2]

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References

  1. Galardi, S.; Fatica, A.; Bachi, A.; Scaloni, A.; Presutti, C.; Bozzoni, I. (October 2002). "Purified Box C/D snoRNPs Are Able to Reproduce Site-Specific 2'-O-Methylation of Target RNA in Vitro". Molecular and Cellular Biology . 22 (19): 6663–6668. doi:10.1128/MCB.22.19.6663-6668.2002. PMC   134041 . PMID   12215523.
  2. Tycowski KT, Smith CM, Shu MD, Steitz JA (1996). "A small nucleolar RNA requirement for site-specific ribose methylation of rRNA in Xenopus". Proc. Natl. Acad. Sci. U.S.A. 93 (25): 14480–5. Bibcode:1996PNAS...9314480T. doi: 10.1073/pnas.93.25.14480 . PMC   26158 . PMID   8962077.