Plays a role in somitogenesis. Essential for transcriptional repression of the segmental patterning genes, thus terminating the segmentation program in the presomitic mesoderm, and also required for the maintenance of rostrocaudal polarity in somites (By similarity). Expressed in the anterior presomitic mesoderm and somites of stage E9.5 dpc embryos. Also expressed in tongue, diaphragm and intercostal muscles at 16.5 dpc. The ripply homology domain is required for transcriptional repression. The WRPW motif is required for binding to TLE/GROUCHO proteins. Belongs to the ripply family.