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Alternative splicing is one of the most important mechanisms to generate a large number of mRNA and protein isoforms from the surprisingly low number of human genes. Unlike promoter activity, which primarily regulates the amount of transcripts, alternative splicing changes the structure of transcripts and their encoded proteins. Together with nonsense-mediated decay (NMD), at least 25% of all alternative...
A novel 100-150-residue domain has been identified in the human splicing factor YT521-B and its Drosophila and yeast homologues. Homology searches show that the domain is typical for the eukaryotes and is particularly abundant in plants. It is predicted to adopt a mixed α-helix-β-sheet fold and to bind to RNA. We propose the name YTH (for YT521-B homology) for the domain.
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