Small nucleolar RNA SNORD101

snoRNA U101 (also known as SNORD101) 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.

Small nucleolar RNA SNORD101
Predicted secondary structure and sequence conservation of SNORD101
Identifiers
SymbolSNORD101
Alt. SymbolsU101
RfamRF00186
Other data
RNA typeGene; snRNA; snoRNA; CD-box
Domain(s)Eukaryota
GOGO:0006396 GO:0005730
SOSO:0000593
PDB structuresPDBe

snoRNA U101 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]

U101 was identified by computational screening of the introns of ribosomal protein genes for conserved C/D box sequence motifs and expression experimentally verified by northern blotting.[2] snoRNA U101 resides in intron 3 of the ribosomal protein S12. U101 shares the same host gene with C/D box snoRNA HBII-429, and the H/ACA box snoRNA ACA33.[3]

There is currently no predicted methylation target for U101.[2][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): 6663–6668. doi:10.1128/MCB.22.19.6663-6668.2002. PMC 134041. PMID 12215523.
  2. Vitali P, Royo H, Seitz H, Bachellerie JP, Hüttenhofer A, Cavaillé J (2003). "Identification of 13 novel human modification guide RNAs". Nucleic Acids Res. 31 (22): 6543–51. doi:10.1093/nar/gkg849. PMC 275545. PMID 14602913.
  3. 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. CiteSeerX 10.1.1.105.7552. doi:10.1093/nar/gkj002. PMC 1347365. PMID 16381836.


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