Enables protein domain specific binding activity and protein phosphatase binding activity. Acts upstream of or within several processes, including glomerulus morphogenesis; positive regulation of cellular protein metabolic process; and salivary gland development. Located in several cellular components, including adherens junction; apicolateral plasma membrane; and bicellular tight junction. Part of flotillin complex. Is expressed in several structures, including 4-8 cell stage embryo; alimentary system; central nervous system; metanephros; and reproductive system. Human ortholog(s) of this gene implicated in blepharocheilodontic syndrome 2. Orthologous to human CTNND1 (catenin delta 1). [provided by Alliance of Genome Resources, Apr 2022]