Enables protein-macromolecule adaptor activity. Predicted to be involved in insulin receptor signaling pathway; negative regulation of insulin receptor signaling pathway; and negative regulation of meiotic cell cycle process involved in oocyte maturation. Predicted to act upstream of or within signal transduction. Predicted to be located in Golgi apparatus and endosome. Predicted to be active in cytoplasm and plasma membrane. Is expressed in male reproductive gland or organ; nervous system; and nucleus pulposus. Orthologous to human GRB14 (growth factor receptor bound protein 14). [provided by Alliance of Genome Resources, Apr 2022]