Small nucleolar RNA R24

In molecular biology, Small nucleolar RNA R24 (also known as snoRNA R24) is a non-coding RNA (ncRNA) molecule identified in plants 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.

Small nucleolar RNA R24
Predicted secondary structure and sequence conservation of snoR24
Identifiers
SymbolsnoR24
RfamRF00132
Other data
RNA typeGene; snRNA; snoRNA; CD-box
Domain(s)Eukaryota
GOGO:0006396 GO:0005730
SOSO:0000593
PDB structuresPDBe

R24 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]

snoR24 was originally identified in Arabidopsis thaliana and is proposed to acts as a methylation guide for 18S ribosomal RNA (rRNA) in plants.[3]

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): 6663–8. doi:10.1128/MCB.22.19.6663-6668.2002. PMC 134041. PMID 12215523.
  2. Kiss T (April 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. S2CID 8968788.
  3. Marker C, Zemann A, Terhörst T, Kiefmann M, Kastenmayer JP, Green P, Bachellerie JP, Brosius J, Hüttenhofer A (December 2002). "Experimental RNomics: identification of 140 candidates for small non-messenger RNAs in the plant Arabidopsis thaliana". Current Biology. 12 (23): 2002–13. doi:10.1016/S0960-9822(02)01304-0. PMID 12477388. S2CID 18112420.
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