Small nucleolar RNA SNORD29

Small nucleolar RNA SNORD29
Predicted secondary structure and sequence conservation of SNORD29
Identifiers
Symbol SNORD29
Alt. Symbols U29
Rfam RF00070
Other data
RNA type Gene; snRNA; snoRNA; C/D-box
Domain(s) Eukaryota
GO 0006396 0005730
SO 0000593

SNORD29 (also known as U29) 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.

U29 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][2]

In humans U29 and several other snoRNAs (U22 and U25-U31) are located in the introns of the same gene (called UHG for U22 host gene).[3][4] U29 is proposed to guide the 2'O-ribose methylation of 28S ribosomal RNA (rRNA) residue A4493.[5][6]

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. ↑ Kiss T (2002). "Small nucleolar RNAs: an abundant group of noncoding RNAs with diverse cellular functions". Cell 109 (2): 145–8. doi:10.1016/S0092-8674(02)00718-3. PMID 12007400.
  3. ↑ Tycowski KT, Shu MD, Steitz JA (1996). "A mammalian gene with introns instead of exons generating stable RNA products". Nature 379 (6564): 464–6. doi:10.1038/379464a0. PMID 8559254.
  4. ↑ 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. doi:10.1073/pnas.93.25.14480. PMC 26158. PMID 8962077.
  5. ↑ Kiss-László Z, Henry Y, Bachellerie JP, Caizergues-Ferrer M, Kiss T (1996). "Site-specific ribose methylation of preribosomal RNA: a novel function for small nucleolar RNAs". Cell 85 (7): 1077–88. doi:10.1016/S0092-8674(00)81308-2. PMID 8674114.
  6. ↑ Lestrade, Laurent; Weber, Michel J. (2006). "snoRNA-LBME-db, a comprehensive database of human H/ACA and C/D box snoRNAs". Nucleic Acids Research 34 (Supplement 1: Database Issue): D158–D162. doi:10.1093/nar/gkj002. PMC 1347365. PMID 16381836. CiteSeerX: 10.1.1.105.7552.

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