We want to hear from you!
We need your feedback to keep Rfam going.
Help out Rfam by taking the survey →

0  structures 0  species 0  sequences

Clan: SNORD18 (CL00047)


SNORD18 clan

The SNORD18 clan contains the RNA families SNORD18 and snoU18. 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: SNORD18 and snoU18 [1].

This clan contains 2 families and the total number of sequence regions in the clan is 746.

Literature references

  1. 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:

SNORD18 snoU18

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
snoU18 (RF01159) 91 (12.2%) View
SNORD18 (RF00093) 655 (87.8%) View