Predicted to enable Lys63-specific deubiquitinase activity; protein domain specific binding activity; and thiol-dependent deubiquitinase. Acts upstream of or within negative regulation of neuron apoptotic process and protein deubiquitination. Located in cleavage furrow. Is expressed in several structures, including brain; cardiovascular system; genitourinary system; gut; and respiratory system. Orthologous to human STAMBP (STAM binding protein). [provided by Alliance of Genome Resources, Apr 2022]