Dataset Information

Discovery of highly Potent and Selective Activity-Based Probes for the Deubiquitylating Enzyme USP30

ABSTRACT: Ubiquitin-specific protease 30 (USP30) is a deubiquitylating enzyme (DUB) localized in the mitochondrial membrane, which is related to PINK1/Parkin-mediated mitophagy, pexophagy, BAX/BAK-dependent apoptosis, and IKKβ-USP30-ACLY-regulated lipogenesis/tumorigenesis. Mission therapeutics pointed their in-house screened MTX652 as USP30 inhibitor for Phase I clinical trial in early 2022. Activity-based probes (ABPs) provide a powerful tool for screen USP30 inhibitors. Here, we report the first small molecule ABPs (ABP 2 and ABP 4) for profiling activity of USP30. Through in-gel fluorescence, target-enrichment and proteomics analysis, we demonstrate that ABP 2 and ABP 4 selectively engage USP30 at nanomolar concentration for only 10 min incubation time in live cells. This cellular USP30-engagement is selectively depending on the catalytic cysteine of USP30. Interestingly, DESI1 and DESI2, the small ubiquitin-related modifier (SUMO) proteases, are also engaged by ABP 2 and ABP 4, providing the novel strategy for these probes as DESIs ABPs. We use proteomics analysis to identify the probes targeted proteins by DIA analysis.

INSTRUMENT(S): Q Exactive HF

ORGANISM(S): Homo Sapiens (human)

SUBMITTER: Fangyuan Cao

LAB HEAD: Ed Tate

PROVIDER: PXD044792 | Pride | 2024-05-22

REPOSITORIES: Pride

ACCESS DATA

Dataset's files

Source:

			Action	DRS
	Experimental_design_1.txt	Txt
	FC-MM-18-F1_20220704083722.raw	Raw
	FC-MM-18-F2_20220704125234.raw	Raw
	FC-MM-18-F3_20220704170728.raw	Raw
	FC-MM-18-F4_20220704212144.raw	Raw

Items per page:

1 - 5 of 18

Publications

Discovery of potent and selective activity-based probes (ABPs) for the deubiquitinating enzyme USP30.

Mondal Milon M Cao Fangyuan F Conole Daniel D Auner Holger W HW Tate Edward W EW

RSC chemical biology 20240313 5

Ubiquitin-specific protease 30 (USP30) is a deubiquitinating enzyme (DUB) localized at the mitochondrial outer membrane and involved in PINK1/Parkin-mediated mitophagy, pexophagy, BAX/BAK-dependent apoptosis, and IKKβ-USP30-ACLY-regulated lipogenesis/tumorigenesis. A USP30 inhibitor, MTX652, has recently entered clinical trials as a potential treatment for mitochondrial dysfunction. Small molecule activity-based probes (ABPs) for DUBs have recently emerged as powerful tools for in-cell inhibitor ...[more]

PMID: 38725909

Similar Datasets

Project description:Comparative, dose-dependent analysis of interactions between small molecule drugs and their targets, as well as off-targets, in complex proteomes is crucial for selecting optimal drug candidates. The affinity of small molecules for targeted proteins is largely dictated by interactions between amino acid side chains and these drugs. Thus, studying drug-protein interactions at an amino acid resolution provides a comprehensive understanding of drug selectivity and efficacy. In this study, we further refined the site-specific activity-based protein profiling strategy, PhosID-ABPP, on a timsTOF Pro mass spectrometer. This refinement enables dose-dependent competition of inhibitors within a single cellular proteome. Here, a comparative analysis of two activity-based probes (ABPs), developed to selectively target the epidermal growth factor receptor (EGFR), namely PF-06672131 and PF-6422899, facilitated the simultaneous identification of ABP-specific binding sites at a proteome-wide scale within a cellular proteome. Dose-dependent probe-binding preferences for proteinaceous cysteines, even at low nanomolar ABP concentrations, could be revealed. Notably, while both ABPs showed comparable affinities for the EGFR, PF-06672131 had a broader off-target reactivity profile. In contrast, PF-6422899 exhibited higher affinity for the ERBB2 receptor and bound to catalytic cysteines in several other enzymes, which is likely to disrupt their catalytic activity. Notably, PF-06672131 also effectively labeled ADP/ATP translocase proteins at a concentration of just 1 nanomolar. Additionally, analysis of different binding sites within the EGF receptor and the voltage-dependent anion channel 2 revealed secondary binding sites of both probes and provided insights into the binding poses of inhibitors on these proteins. Insights from the PhosID-ABPP analysis of these two ABPs serve as a valuable resource for understanding drug on- and off-target engagement in a dose- and site-specific manner.