Journal
RNA BIOLOGY
Volume 7, Issue 2, Pages 192-204Publisher
TAYLOR & FRANCIS INC
DOI: 10.4161/rna.7.2.11207
Keywords
pseudouridine; 2 '-O-methylation; scaRNA; snoRNA; pre-mRNA splicing; spliceosomal snRNA; Cajal body
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Funding
- National Institute of Health [GM62937, GM068411]
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Spliceosomal snRNAs are extensively 2'-O-methylated and pseudouridylated. The modified nucleotides are relatively highly conserved across species, and are often clustered in regions of functional importance in pre-mRNA splicing. Over the past decade, the study of the mechanisms and functions of spliceosomal snRNA modifications has intensified. Two independent mechanisms behind these modifications, RNA-independent (protein-only) and RNA-dependent (RNA-guided), have been discovered. The role of spliceosomal snRNA modifications in snRNP biogenesis and spliceosome assembly has also been verified.
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