SMU-2 and SMU-1, Caenorhabditis elegans homologs of mammalian spliceosome-associated proteins RED and fSAP57, work together to affect splice site choice.

Abstract excerpt

Mutations in the Caenorhabditis elegans gene smu-2 suppress mec-8 and unc-52 mutations. It has been proposed that MEC-8 regulates the alternative splicing of unc-52 transcripts, which encode the core protein of perlecan, a basement membrane proteoglycan. We show that mutation in smu-2 leads to enhanced accumulation of transcripts that skip exon 17, but not exon 18, of unc-52, which explains our finding that smu-2...

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