Purity ~90% (SDS-PAGE). Inhibits both auto-ubiquitination of PARK2 and ubiquitination of target proteins by PARK2. May function as a nucleotide exchange factor for HSP/HSP70, promoting ADP release, and activating Hsp70-mediated refolding. Source: Recombinant protein corresponding to aa1-447 from human BAG5, fused to His-SUMO-Tag at N-terminal, expressed in E. coli. Molecular Weight: ~67.2kD AA