Enables ubiquitin protein ligase binding activity. Predicted to be involved in several processes, including collagen-activated tyrosine kinase receptor signaling pathway; negative regulation of bone resorption; and platelet aggregation. Predicted to act upstream of or within several processes, including negative regulation of osteoclast differentiation; negative regulation of platelet aggregation; and platelet activation. Predicted to be active in cytoplasm. Orthologous to human UBASH3B (ubiquitin associated and SH3 domain containing B). [provided by Alliance of Genome Resources, Apr 2022]