Predicted to enable phosphotyrosine residue binding activity. Acts upstream of or within several processes, including hematopoietic stem cell proliferation; negative regulation of oocyte maturation; and positive regulation of immune response. Predicted to be located in cytoplasmic ribonucleoprotein granule; cytosol; and nucleoplasm. Is expressed in brain; molar; and sensory organ. Orthologous to human SHB (SH2 domain containing adaptor protein B). [provided by Alliance of Genome Resources, Apr 2022]