Plpro

The coronaviral proteases, papain-like protease (PLpro) and 3C-like protease (3CLpro), are attractive antiviral drug targets because they are essential for coronaviral replication. Although the primary function of PLpro and 3CLpro are to process the viral polyprotein in a coordinated manner, PLpro has the additional function of stripping ubiquitin and ISG15 from host-cell proteins to aid coronaviruses in their evasion of the host innate immune responses. SARS-CoV-2 PLpro papain-like protease Protein (His & Avi) is expressed in E. coli expression system with N-His-Avi tag. The predicted molecular weight is 38.6 kDa and the accession number is P0C6U8.

The coronaviral proteases, papain-like protease (PLpro) and 3C-like protease (3CLpro), are attractive antiviral drug targets because they are essential for coronaviral replication. Although the primary function of PLpro and 3CLpro are to process the viral polyprotein in a coordinated manner, PLpro has the additional function of stripping ubiquitin and ISG15 from host-cell proteins to aid coronaviruses in their evasion of the host innate immune responses. SARS PLpro papain-like protease Protein (His) is expressed in E. coli expression system with C-His tag. The predicted molecular weight is 36.91 kDa and the accession number is AAX16193.1.

Replication of severe acute respiratory syndrome (SARS) coronavirus (SARS-CoV) requires proteolytic processing of the replicase polyprotein by two viral cysteine proteases, a chymotrypsin-like protease (3CLpro) and a papain-like protease (PLpro). These proteases are important targets for development of antiviral drugs that would inhibit viral replication and reduce mortality associated with outbreaks of SARS-CoV. PLpro is a cysteine protease located within the non-structural protein 3 (NS3) section of the viral polypeptide. PLPro activity is required to process the viral polyprotein into functional, mature subunits; specifically, PLPro cleaves a site at the amino-terminus of the viral replicase region. In addition to its role in viral protein maturation, PLPro possesses a deubiquitinating and deISGylating activity. In vivo, this protease antagonizes innate immunity by inhibiting IRF3-induced production of type I interferons.

SARS-CoV (strain WH20) Plpro papain-like protease (His) is expressed in E. coli expression system with His tag. The predicted molecular weight is 36.65 kDa and the accession number is AAX16193.1.

SARS-CoV-2 Plpro papain-like protease Protein (aa 1564-1880, His) is expressed in E. coli expression system. The predicted molecular weight is 36.79 kDa and the accession number is QVD65746.1.