Before revision: 3CL-Pro (or M-Pro) is the SARS-CoV-2 main protease,  responsible for the cleavage of the large polyprotein 1ab transcript and the liberation of eleven proteins , responsible for viral growth and replication.
After revision: 3CL-Pro (or M-Pro) is the SARS-CoV-2 main protease, responsible for the cleavage of the large polyprotein 1ab transcript in proteins acting on viral growth and replication.