RNA-binding protein that mediates pre-mRNA alternative splicing regulation. Plays a role in the regulation of cell proliferation, differentiation and migration. Positive regulator of EPO-dependent erythropoiesis. Participates in cell differentiation regulation by repressing tissue-specific exons. Promotes FAS exon 6 skipping. Binds RNA, preferentially to both poly(G) and poly(U). Interacts with THBS4 (via the acidic amphipathic C-terminus). Expressed in several hematopoietic cell lines examined. Extended N-terminus. Truncated N-terminus.