Transcriptional repressor. Required for pronephric kidney development. At early gastrula stage, expressed in the involuting mesoderm and endoderm. During neurulation, expressed in the pronephric primordium, following expression of osr2. During tailbud (stage 35), expressed in the rectal diverticulum and in the kidney ducts. Belongs to the Odd C2H2-type zinc-finger protein family.