This model represents a noncoding RNA gene. Some ncRNA genes have transformed into, or become assimilated into transposons. Others occur in sufficient copy number that ab initio repeat finders may classify them as repetitive elements. This entry is used to correctly identify the gene and its pseudogenes and prevent misannotation.
U3 snoRNA (small nucleolar RNA) gene / pseudogene
A brief description of the entry. Suggestions for modification to this description can be submitted using the adjacent pencil icon.
U3 is a uniquely-structured C/D box snoRNA; it is involved in pre-rRNA processing, rather than methylation. There are few genes, but >100 pseudogenes in human.
Pseudogenes for human small nuclear RNA U3 appear to arise by integration of self-primed reverse transcripts of the RNA into new chromosomal sites.
Bernstein LB, Mount SM, Weiner AM;
Cell 1983;32:461-472 Pubmed
Number of matches to this model that meet the "Gathering" threshold and more stringent "Trusted" threshold. For each threshold, two numbers are shown: (1) the number of matches to this model after removing redundant hits to other models ("non-redundant"), and (2) the total number of matches above threshold, including those with better scoring matches to other models ("all hits").
The model is 217 positions long. The average length of non-redundant hits to the model is 140.8. This table shows the number of hits above score thresholds:
|non-redundant||all hits||non-redundant||all hits|
External Database Links
- Repbase : U3 [Requires Repbase registration]