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WT1 interacts with the splicing factor U2AF65 in an isoform-dependent manner and can be incorporated into spliceosomes

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Author(s)

R C Davies, C Calvio, E Bratt, S H Larsson, A I Lamond, N D Hastie

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Abstract

WT1 is essential for normal kidney development, and genetic alterations are associated with Wilms' tumor, Denys Drash (DDS), and Frasier syndromes. Although generally considered a transcription factor this study has revealed that WT1 interacts with an essential splicing factor, U2AF65, and associates with the splicing machinery. WT1 is alternatively spliced and isoforms that include three amino acids, KTS, show stronger interaction with U2AF65 in vitro and better colocalization with splicing factors in vivo. Interestingly a mutation associated with DDS enhanced both -KTS WT1 binding to U2AF65 and splicing-factor colocalization. These data illustrate the functional importance of WT1 isoforms and suggest that WT1 plays a role in pre-mRNA splicing.

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Original languageEnglish
Pages (from-to)3217-25
Number of pages9
JournalGenes & Development
Volume12
Issue number20
DOIs
Publication statusPublished - 15 Oct 1998

    Research areas

  • Alternative Splicing, Animals, COS Cells, DNA-Binding Proteins/genetics, Genes, Wilms Tumor, Humans, Male, Nuclear Proteins, Protein Isoforms/genetics, Ribonucleoproteins/metabolism, Spliceosomes/metabolism, Splicing Factor U2AF, Transcription Factors/genetics, Tumor Cells, Cultured, WT1 Proteins

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