Allosteric Inhibitors of the SARS-COV-2 Papain-like Protease Domain Induce Proteasomal Degradation of Its Parent Protein NSP3

The papain-like protease of SARS-COV-2 is essential for viral replication and pathogenesis. Its location within a much larger multifunctional protein, NSP3, makes it an ideal candidate for a targeted degradation approach capable of eliminating multiple functions with a single-molecule treatment. In this work, we have developed a HiBiT-based cellular model to study NSP3 degradation and used this platform for the discovery of monovalent NSP3 degraders. We present previously unreported degradation activity of published papain-like protease inhibitors. Follow-up exploration of structure-activity relationships and mechanism-of-action studies points to the recruitment of the ubiquitin-proteasome machinery that is solely driven by site occupancy, regardless of molecular features of the ligand. Supported by HDX data, we hypothesize that binding-induced structural changes in NSP3 trigger the recruitment of an E3 ligase and lead to proteasomal degradation.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:19

Enthalten in:

ACS chemical biology - 19(2024), 1 vom: 19. Jan., Seite 22-36

Sprache:

Englisch

Beteiligte Personen:

Cockram, Peter E [VerfasserIn]
Walters, Benjamin T [VerfasserIn]
Lictao, Aaron [VerfasserIn]
Shanahan, Frances [VerfasserIn]
Wertz, Ingrid E [VerfasserIn]
Foster, Scott A [VerfasserIn]
Rudolph, Joachim [VerfasserIn]

Links:

Volltext

Themen:

Coronavirus Papain-Like Proteases
EC 3.4.22.2
Journal Article
Papain
Papain-like protease, SARS-CoV-2
Protease Inhibitors
Viral Nonstructural Proteins

Anmerkungen:

Date Completed 22.01.2024

Date Revised 22.01.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1021/acschembio.3c00312

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM366412329