Orphan nuclear receptor. Binds to a response element containing the sequence 5'-TCAAGGTCA-3'. May be involved in the regulation of gene expression in germ cell development during gametogenesis. Homodimer. Interacts with UIMC1. Expressed in the germ cells of both the adult testis and ovary, being most abundant in spermatids. Belongs to the nuclear hormone receptor family. NR6 subfamily.