Involved in transcriptional regulation. Represses the transcription of a number of genes including gastrin, stromelysin and enolase. Binds to the G-rich box in the enhancer region of these genes. Interacts with HNRNPDL (By similarity). Interacts with the 5FMC complex; the interaction requires association with CHTOP (PubMed:22872859). Interacts with CAVIN1 (PubMed:10727401). Strong expression detected in brain, lung, liver and kidney, with lower levels detected in spleen, skeletal muscle, testis and heart. Detected in embryos from 7 dpc to 17 dpc. Expression decreases in developing skeletal muscles. Sumoylated with SUMO2. Desumoylated by SENP3, resulting in the stimulation of transcription of its target genes. Belongs to the krueppel C2H2-type zinc-finger protein family.