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 (PubMed:15190078). Interacts with the 5FMC complex; the interaction requires association with CHTOP. Interacts with CAVIN1 (By similarity). Sumoylated with SUMO2. Desumoylated by SENP3, resulting in the stimulation of transcription of its target genes (By similarity). The disease is caused by variants affecting the gene represented in this entry. Belongs to the krueppel C2H2-type zinc-finger protein family.