A putative DNA-binding regulatory protein associated with meiosis in spermatogenesis. Predominantly in the spermatocytes and spermatids of testes. It is also expressed in the fetus and embryonic stem cells at lower levels. Detected in the newborn testis and peaks at 3 weeks during the first cycle of spermatogenesis. Expressed in the fetus and embryo. Belongs to the krueppel C2H2-type zinc-finger protein family.