This track shows small nucleolar RNA (snoRNA) in the functional RNA database .
|Description provided by Sequence Ontology (SO):|
|A snoRNA (small nucleolar RNA) is any one of a class of small RNAs that are associated with the eukaryotic nucleus as components of small nucleolar ribonucleoproteins. They participate in the processing or modifications of many RNAs, mostly ribosomal RNAs (rRNAs) though snoRNAs are also known to target other classes of RNA, including spliceosomal RNAs, tRNAs, and mRNAs via a stretch of sequence that is complementary to a sequence in the targeted RNA.|
Short sequences (shorter than 30nt) are aligned to genome by SeqMap  with 0 mismatch, no-gap and no-repeat.
Other sequences are aligned to genome by BLAT  with identity>=99, coverage>=90 and no-repeat.
 Kin T, Yamada K, Terai G, Okida H, Yoshinari Y, Ono Y, Kojima A, Kimura Y, Komori T, Asai K. fRNAdb: a platform for mining/annotating functional RNA candidates from non-coding RNA sequences. Nucleic Acids Res. 2007 Jan;35(Database issue):D145-8.
 Jiang H, Wong WH SeqMap: mapping massive amount of oligonucleotides to the genome. Bioinformatics. 2008 Oct 15;24(20):2395-6. Epub 2008 Aug 12.
 Kent WJ. BLAT--the BLAST-like alignment tool. Genome Res. 2002 Apr;12(4):656-64.