(R)-CMPD-39

(R)-CMPD-39 is the R enantiomer of CMPD-39 ( HY-141659 ). CMPD-39 is a selective non-covalent inhibitor of the ubiquitin-specific protease USP30 (IC50 =~20 nM), with high selectivity over other DUB family members (1-100 μM). CMPD-39 inhibits the deubiquitinating activity of USP30, enhances the ubiquitination of mitochondrial proteins TOMM20 and SYNJ2BP; thus, CMPD-39 promotes phosphoubuitin accumulation, thereby accelerating mitochondrial autophagy (mitophagy) and peroxisomal autophagy (pexophagy). CMPD-39 significantly restores impaired mitochondrial function in dopaminergic neurons derived from Parkinson's disorder patients.