Involved in regulation of intracellular signaling pathways during development. Specifically thought to play a role in canonical and/or non-canonical Wnt signaling pathways through interaction with DSH (Dishevelled) family proteins. Binds to dvl2 and may regulate the degradation of ctnnb1/beta-catenin, thereby modulating the transcriptional activation of target genes of the Wnt signaling pathway. Seems to activate the canonical Wnt signaling pathway. Interacts with dvl2. Expressed in the future mesendoderm during early gastrulation. Expressed in the prechordal plate axial mesoderm and the posterior neural plate in mid-gastrula, and in the anterior neural plate at the end of gastrulation and during somitogenesis. Strongly expressed in and the tail bud and several areas of the brain at the end of somitogenesis. The C-terminal PDZ-binding motif may mediate interaction with the PDZ domains of DSH (Dishevelled) family proteins. Belongs to the dapper family.