Transcription factor that binds to sequence with multiple copies of 5'-TTC[CG]G-3' present in its own promoter and that of the HNRPA2B1 gene. Down-regulates transcription of these genes. Binds to the retinoic acid response element (RARE) 5'-AGGGTTCACCGAAAGTTCA-3'. Activates the proenkephalin gene independently of promoter binding, probably through protein-protein interaction. Regulates epithelial cell proliferation and side-branching in the mammary gland. Required for neural tube closure and skeletal patterning. Controls the expression of peripheral tissue antigens in pancreatic lymph nodes. Transcriptional activator of EIF4G3. May also involved in behavior (By similarity). Homodimer (By similarity).Interacts with LMO4; LMO4 blocks export from nucleus. Interacts with LMO2 and CLIM2 (By similarity). May interact with the corepressors NCOR1 and NCRO2. Identified in a complex with XRCC5 and XRCC6. Interacts (via the SAND domain) with the DNA-PK complex subunit XRCC6; the interaction is direct and may be inhibited by DNA-binding (By similarity). May be phosphorylated by DNA-PK complex in a DNA independent manner (in vitro).