Small nucleolar RNA R160

In molecular biology, Small nucleolar RNA R160 (also known as snoR160) 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 R160
Predicted secondary structure and sequence conservation of snoR160
Identifiers
SymbolsnoR160
RfamRF00203
Other data
RNA typeGene; snRNA; snoRNA; CD-box
Domain(s)Eukaryota
GOGO:0006396 GO:0005730
SOSO:0000593
PDB structuresPDBe

snoR160 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]

snoR160 was identified by computational screening of the rice Oryza sativa and is predicted to acts as a methylation guide for 25S ribosomal RNA in plants.[2] snoR160 has also been alternatively named snoZ270 in rice.

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. Chen CL, Liang D, Zhou H, Zhuo M, Chen YQ, Qu LH (2003). "The high diversity of snoRNAs in plants: identification and comparative study of 120 snoRNA genes from Oryza sativa". Nucleic Acids Res. 31 (10): 2601–13. doi:10.1093/nar/gkg373. PMC 156054. PMID 12736310.


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