Examining the capacity of human U1 snRNA variants to facilitate pre-mRNA splicing
The human U1 snRNA is encoded by a multigene family consisting of transcribed variants and defective pseudogenes. Many variant U1 (vU1) snRNAs have been demonstrated to not only be transcribed but also processed by the addition of a trimethylated guanosine cap, packaged into snRNPs, and assembled in...
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Veröffentlicht in: | RNA (Cambridge) 2024-03, Vol.30 (3), p.271-280 |
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Sprache: | eng |
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Zusammenfassung: | The human U1 snRNA is encoded by a multigene family consisting of transcribed variants and defective pseudogenes. Many variant U1 (vU1) snRNAs have been demonstrated to not only be transcribed but also processed by the addition of a trimethylated guanosine cap, packaged into snRNPs, and assembled into spliceosomes; however, their capacity to facilitate pre-mRNA splicing has, so far, not been tested. A recent systematic analysis of the human snRNA genes identified 178 U1 snRNA genes that are present in the genome as either tandem arrays or single genes on multiple chromosomes. Of these, 15 were found to be expressed in human tissues and cell lines, although at significantly low levels from their endogenous loci, |
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ISSN: | 1355-8382 1469-9001 1469-9001 |
DOI: | 10.1261/rna.079892.123 |