The function of ENSG00000119314 (PTBP3, polypyrimidine tract binding protein 3) is as follows. 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). {ECO:0000269|PubMed:10207106, ECO:0000269|PubMed:18335065, ECO:0000269|PubMed:19441079, ECO:0000269|PubMed:20937273}.