Corepressor targeting diverse transcription regulators. Interacts with the C-terminus of tcf7l1-a via the consensus motifs P-X-[DNS]-L-[STVA]. Expressed throughout development. Localized to discrete structures during neurulation. The pattern of expression is increasingly refined to include the head, central nervous system and tissues along the dorsal midline to the tailbud. Belongs to the D-isomer specific 2-hydroxyacid dehydrogenase family.