Plays a role in pre-mRNA splicing by promoting usage of the upstream 3'-splice site at alternative NAGNAG splice sites; these are sites featuring alternative acceptor motifs separated by only a few nucleotides (By similarity). May also modulate exon inclusion events (By similarity). Plays a role in spliceosomal remodeling by displacing WBP4 from SNRNP200 and may act to inhibit SNRNP200 helicase activity (By similarity). Binds U5 snRNA (By similarity). Required for proper chromosome segregation (By similarity). Not required for splicing of shelterin components (By similarity).
Subcellular locations: Nucleus, Chromosome, Centromere
Dispersed throughout the nucleus during interphase (By similarity). Colocalizes with microtubule attachment sites at centromeres following mitotic checkpoint activation (By similarity).