Small Cajal body specific RNA 13 | |
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![]() Predicted secondary structure and sequence conservation of SCARNA13 | |
Identifiers | |
Symbol | SCARNA13 |
Alt. Symbols | U93 |
Rfam | RF00231 |
Other data | |
RNA type | Gene; snRNA; snoRNA; scaRNA |
Domain(s) | Eukaryota |
GO | GO:0006396 GO:0015030 GO:0005730 |
SO | SO:0000275 |
PDB structures | PDBe |
In molecular biology, Small Cajal body specific RNA 13 (also known as scaRNA13 or U93) is a small nucleolar RNA found in Cajal bodies and believed to be involved in the pseudouridylation of U2 and U5 spliceosomal RNA.
scaRNAs are a specific class of small nucleolar RNAs that localise to the Cajal bodies and guide the modification of RNA polymerase II transcribed spliceosomal RNAs U1, U2, U4, U5 and U12.[1]
U93 is composed of two tandemly arranged box H/ACA box sequence motifs and belongs to the H/ACA box class of guide RNAs.[2] U93 is predicted to guide pseudouridylation of U2 spliceosomal snRNA residue U54 and residue U53 of snRNA U5.[2][3][4]