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Clan: snR30-U17 (CL00078)


snR30-U17 clan

The snR30-U17 clan contains the RNA families SNORA73 and snR30. Homology between these families has been established in the published literature [1,2]. Researchers at the human snoRNA database (snoRNABase) have established that the following human and S. cerevisiae snoRNAs target modifications on orthologous positions of the ribosome: SNORA73 and snR30 [3].

This clan contains 2 families and the total number of sequence regions in the clan is 543.

Literature references

  1. Samarsky DA, Fournier MJ, Nucleic Acids Res. 1999;27:161-164.: A comprehensive database for the small nucleolar RNAs from Saccharomyces cerevisiae. 9847166
  2. Piekna-Przybylska D, Decatur WA, Fournier MJ, RNA. 2007;13:305-312.: New bioinformatic tools for analysis of nucleotide modifications in eukaryotic rRNA. 17283215
  3. Lestrade L, Weber MJ;, Nucleic Acids Res. 2006;34:D158-D162.: snoRNA-LBME-db, a comprehensive database of human H/ACA and C/D box snoRNAs. 16381836


This clan contains the following 2 member families:

SNORA73 snR30

External database links

Secondary structures

This tool allows you to view the secondary structure images of two clan members side-by-side. Choose the family structures using the two drop-down menus below.


The table below shows the number of occurrences of each family throughout the sequence database. In brackets beside each number is the percentage of the total number of sequence hits for the clan that are represented by this family. The rightmost column provides a link to the alignments tab for each family.

Rfam family Num. regions Alignment
snR30 (RF01271) 30 (5.5%) View
SNORA73 (RF00045) 513 (94.5%) View