SensoLyte® SARS-CoV-2 Papain-like Protease (PLpro) Activity Assay Kit *Fluorimetric*

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  • Cat.Number : AS-72263
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    In stock
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The SensoLyte® 520 SARS-CoV-2 Papain-like Protease/ Deubiquitinase Activity Assay Kit employs a fluorescent peptide substrate for the detection of deubiquitnation activity. When active Papain-like Protease cleaves the substrate, it results in an increase of bright green fluorescence at excitation/emission = 490 nm/520 nm. This assay can detect as low as 7.8 ng/mL active Papain-like Protease in the sample. This kit can be used to detect enzyme activity in purified enzyme preparations, biological samples and can also be applied for the compound screening.

SARS-Cov-2 Papain-like Protease (PLpro) is encoded as non-structural protein 3 (nsp3) and it is involved in the cleavage of the viral polyprotein. This enzyme hydrolyzes ubiquitin chains which are important in the inflammation process and also removes interferon-stimulated gene 15 (ISG15) modifications from proteins to reverse antiviral responses. As an essential enzyme in the process of SARS-CoV-2 replication and infection of the host, PLpro has been an attractive drug target for the coronavirus inhibitor development.


Kits components
  • Component A: Papain-like Protease Deubiquitination substrate Ex/Em=490 nm/520 nm upon cleavage; 400µM, 50µL Component B: Rh110 fluorescence reference standard, Ex/Em=490 nm/520 nm; 400µM, 15µL Component C: Recombinant SARS-CoV-2 Papain-like protease; 0.1mg/mL, 10µL Component D: 2X Assay Buffer, 25mL Component E: Inhibitor (GRL0617); 10µM, 10µL
Absorbance (nm)
  • 490
Emission (nm)
  • 520
Storage & stability
Storage Conditions
  • Store component C at -80°C. Store all other components at -20°C. Component D can be stored at room temperature for convenience. Protect components A and B from light and moisture.
Biomarker Target
Detection Method
Detection Limit
  • 7.8 ng/ml
Research Area
Sub-category Research Area
  • Research use
Code Nacres
  • NA.32

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