RNA-binding protein that plays a role in the regulation of transcription, pre-mRNA splicing and mRNA translation. Negatively regulates DNA-binding activity of the transcription factor MEF2C in myocardial cells in response to mechanical stress (By similarity. Plays a role in pre-mRNA splicing regulation. Binds (via C-terminus to poly(U RNA. Involved in mRNA translation regulation, probably at the initiation step. Seems to play a role in PML-nuclear bodies formation.,IHABP-4,IHABP4,Ki-1/57,SERBP1L,HABP4,HABP4