3CL Protease (T21I, S144A) (SARS-CoV-2) Assay Kit

The 3CL Protease (T21I, S144A) (SARS-CoV-2) Assay Kit is a 96-well homogeneous fluorogenic assay designed to measure the activity of T21I, S144A mutated 3CL Protease for screening and profiling applications, with no time-consuming washing steps. 3CL inhibitor GC376 is also included as a control.Figure 1: Illustration of the principle behind the 3CL protease assay.The 3CL Protease Substrate is an internally quenched 14-mer fluorogenic peptide (DABCYL-KTSAVLQSGFRKME-EDANS) . When the donor (EDANS) and acceptor (DABCYL) fluorophores are in close proximity the energy emitted from EDANS is quenched by DABCYL (intact substrate) . Upon proteolysis by 3CL, the peptide substrate is cleaved between the glutamine and serine residues to generate the highly fluorescent peptide fragment (SGFRKME-EDANS) . The fluorescence intensity increases proportionally to the activity of 3CL. More information on the substrate, including MW and structure, can be found on our website (BPS Bioscience #79952) .Need us to run inhibitor screens or profile your compounds against 3CL Protease (T21I, S144A) (SARS-CoV-2) ? Check out ourProtease Screening ServicesorCoronavirus Services.