Recombinant 2019-nCoV Papain-Like Protease

• Background:

  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.

• Description:

  Recombinant 2019-nCoV Papain-like Protease is produced by our E.coli expression system and the target gene encoding Glu1564-Lys1878 is expressed.

• Synonyms:

  Papain-like Protease; PLpro; PL-PRO; pp1a; Replicase polyprotein 1a

• UniProt:

  QHD43415.1

• Accession Number:

  QHD43415.1

• Purity:

  Greater than 95% as determined by reducing SDS-PAGE.

• Bioactivity:

  Measured by its ability to convert the fluorogenic peptide substrate, Arg-Leu-Arg-Gly-Gly-AMC (RLRGGAMC) to RLRGG and 7-amino-4-methylcoumarin (AMC) . The Specific Activity is 241.7 pmol/min/μg.

• Molecular Weight:

  35.8 KDa

• Shipping Conditions:

  The product is shipped on dry ice/polar packs. Upon receipt, store it immediately at the temperature listed below.

• Storage Conditions:

  Store at ≤-70°C, stable for 6 months after receipt. Store at ≤-70°C, stable for 3 months under sterile conditions after opening. Please minimize freeze-thaw cycles.

• Notes:

  Lyophilized protein should be stored at < -20°C, though stable at room temperature for 3 weeks. Reconstituted protein solution can be stored at 4-7°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.

• Observed Molecular Weight:

  34 KDa, reducing conditions

• Other Product Names:

  Papain-like Protease; PLpro; PL-PRO; pp1a; Replicase polyprotein 1a

• CAS Number:

  9000-83-3