Target intelligence / Profile preview

Papain-like Protease (PLpro)

Target
PLpro
Molecular classification
Enzyme, Protease, Cysteine Protease
01

Overview

Papain-like protease (PLpro) is a multifunctional cysteine protease found in coronaviruses, including SARS-CoV, MERS-CoV, and SARS-CoV-2. It is an essential viral enzyme responsible for processing the viral polyprotein and modulating host immune responses. PLpro is encoded as part of nonstructural protein 3 (nsp3), which is produced from the large replicase polyprotein 1a/1ab. PLpro functions as a viral protease and also possesses deubiquitinating and deISGylating activities, allowing it to interfere with host immune signaling.

Other names
Nonstructural protein 3NS3nsp3CoV Papain-like proteasePL-PRO
02

Mechanism of action

Inhibition of PLpro protease activity, inhibition of deubiquitination and deISGylation

03

Biological functions

Viral polypeptide processingDeubiquitinationDeISGylationImmune modulationViral replication
04

Disease associations

Infection
05

Safety considerations

Potential for off-target effects due to similarity to human ubiquitin-specific proteases
06

Interacting drugs

GRL0617

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