Predicted to enable guanyl-nucleotide exchange factor activity and protein kinase inhibitor activity. Involved in negative regulation of protein kinase activity. Predicted to be located in cytoplasmic vesicle membrane; mitochondrion; and nuclear body. Predicted to be active in cytoplasm. Orthologous to human SH3BP5 (SH3 domain binding protein 5). [provided by Alliance of Genome Resources, Apr 2022]