Functions as a sequence-specific transcriptional repressor. Interacts with TRIM28; enhances the transcriptional repressor activity. Ubiquitously expressed with higher expression in lung, kidney and testis. Up-regulated by EGF; delayed early response target for EGF (at protein level). Belongs to the krueppel C2H2-type zinc-finger protein family. Contaminating sequence. Sequence of unknown origin in the C-terminal part.