Predicted to enable several functions, including beta-catenin binding activity; cytoskeletal protein binding activity; and gamma-catenin binding activity. Involved in several processes, including gap junction assembly; gonad development; and response to estrogen. Located in acrosomal vesicle; adherens junction; and plasma membrane. Biomarker of esophageal cancer and lung carcinoma. Human ortholog(s) of this gene implicated in patterned macular dystrophy 2. Orthologous to human CTNNA1 (catenin alpha 1). [provided by Alliance of Genome Resources, Apr 2022]