Transcriptional repressor. May repress NR5A1, PPARG, NR1H3, NR4A2, ESR1 and NR3C1 transcriptional activity (By similarity). Interacts with NR5A1. Highly expressed in testis and spleen. Moderately expressed in lung, adrenal gland, uterus, and ovary. Very low expression in pancreas, heart, skeletal muscle, adipose tissue, kidney, and liver. Belongs to the krueppel C2H2-type zinc-finger protein family.