Protein Construction:A DNA sequence encoding the SARS-CoV-2 (2019-nCoV) papain-like protease (YP_009725299.1) (Glu1564-Val1880) was expressed with a polyhistidine tag at the N-terminus.
Fusion Tag N-6His
Stability and Storage: Lyophilized proteins are stable for up to 12 months when stored at -20 to -80?C. Reconstituted protein solution can be stored at 4-8? for 2-7 days. Aliquots of reconstituted samples are stable at < -20? for 3 months.
Formulation: Lyophilized from sterile 20 mM Tris 500mM NaCl, pH 7.4.
Background: The coronaviral proteases, papain-like protease (PLpro) and 3C-like protease (3CLpro), are attractive antiviral drug targets because they are essential for coronaviral replication. 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. Targeting PLpro with antiviral drugs may have an advantage in not only inhibiting viral replication but also inhibiting the dysregulation of signaling cascades in infected cells that may lead to cell death in surrounding, uninfected cells.