Predicted to be involved in cell surface receptor signaling pathway; intracellular signal transduction; and positive regulation of protein kinase activity. Predicted to act upstream of or within mast cell activation. Predicted to be located in cell-cell junction; cytosol; and plasma membrane raft. Predicted to be part of TCR signalosome. Human ortholog(s) of this gene implicated in primary immunodeficiency disease. Orthologous to human LCP2 (lymphocyte cytosolic protein 2). [provided by Alliance of Genome Resources, Apr 2022]