TIAL1

RNA-binding protein involved in alternative pre-RNA splicing and in cytoplasmic stress granules formation. Shows a preference for uridine-rich RNAs. Activates splicing of alternative exons with weak 5' splice sites followed by a U-rich stretch on its own pre-mRNA and on TIA1 mRNA (By similarity). Promotes the inclusion of TIA1 exon 5 to give rise to the long isoform (isoform a) of TIA1. Acts downstream of the stress-induced phosphorylation of EIF2S1/EIF2A to promote the recruitment of untranslated mRNAs to cytoplasmic stress granules (SG). Possesses nucleolytic activity against cytotoxic lymphocyte target cells. May be involved in apoptosis..

Function from UniProtKB (Q01085), read 2026-09-23. CC BY 4.0.