IST3 [YIR005W]
Increased sodium tolerance protein 3; Component of the U2 snRNP; required for the first catalytic step of splicing and for spliceosomal assembly; interacts with Rds3p and is required for Mer1p-activated splicing; diploid mutants have a specific defect in MATa1 pre-mRNA splicing which leads to haploid gene expression in diploids; Belongs to the IST3 family.
Synonyms: IST3, IST3p, P40565, P40565p, SNU17 ...