The JOSD2 protein serves as an enzymatic entity capable of cleaving "Lys-63"-linked polyubiquitin chains and, to a lesser extent, "Lys-48"-linked polyubiquitin chains in vitro. This suggests its potential role as a deubiquitinating enzyme involved in the removal of specific ubiquitin linkages. JOSD2 Protein, Human is the recombinant human-derived JOSD2 protein, expressed by E. coli , with tag free.