Transcriptional repressor. Required for pronephric kidney development. At early gastrula stage, expressed in the involuting mesoderm and endoderm. At the end of gastrulation, expressed in the intermediate mesoderm. During neurulation, expressed in the pronephric primordium, preceding expression of osr1. During tailbud (stage 35), expressed broadly in both the kidney ducts and tubules. Belongs to the Odd C2H2-type zinc-finger protein family.