Predicted to be involved in signal transduction. Predicted to act upstream of or within T cell activation via T cell receptor contact with antigen bound to MHC molecule on antigen presenting cell and positive regulation of cell adhesion. Predicted to be part of T cell receptor complex. Predicted to be active in cytosol and plasma membrane. Orthologous to human APBB1IP (amyloid beta precursor protein binding family B member 1 interacting protein). [provided by Alliance of Genome Resources, Apr 2022]