Small nucleolar RNA SNORA30

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Small nucleolar RNA SNORA30/SNORA37 family
Symbol SNORA30
Alt. Symbols snoACA30
Rfam RF00415
Other data
RNA type Gene; snRNA; snoRNA; H/ACA-box
Domain(s) Eukaryota
GO 0006396 0005730
SO 0000594

SNORA30 (also known as ACA30) is a non-coding RNA (ncRNA) molecule which functions in the biogenesis (modification) of other small nuclear RNAs (snRNAs). This type of modifying RNA is located in the nucleolus of eukaryotic cells. It is known as a small nucleolar RNA (snoRNA) and also often referred to as a 'guide RNA' as it 'guides' the modification process.

ACA30 was originally cloned from HeLa cells[1] and belongs to the H/ACA box class of snoRNAs based on its structure and the proteins it is associated with. snoRNA ACA30 is predicted to guide the pseudouridylation of U4643 of 28S ribosomal RNA (rRNA). Pseudouridylation is the (isomerisation of the nucleoside uridine) to the different isomeric form pseudouridine(Ψ).

This snoRNA is related to other snoRNAs identified in human (ACA37)[1] and mouse (MBI-26).[2]


  1. ^ a b Kiss, Arnold M.; Jády, Beáta E.; Bertrand, Edouard; Kiss, Tamás (2004). "Human Box H/ACA Pseudouridylation Guide RNA Machinery". Molecular and Cellular Biology. 24 (13): 5797–5807. doi:10.1128/MCB.24.13.5797-5807.2004. PMC 480876Freely accessible. PMID 15199136. 
  2. ^ Huttenhofer, Alexander; Kiefmann, Martin; Meier-Ewert, Sebastian; O'Brien, John; Lehrach, Hans; Bachellerie, Jean-Pierre; Brosius, Jürgen (1 June 2001). "RNomics: an experimental approach that identifies 201 candidates for novel, small, non-messenger RNAs in mouse". The EMBO Journal. 20 (11): 2943–2953. doi:10.1093/emboj/20.11.2943. PMC 125495Freely accessible. PMID 11387227. 

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