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Mpro, 3CL Protease from coronavirus SARS-COV-2

recombinant protein, lyophilized powder

2019-nCoV, COVID-2019, 3C-like main protease, SARS-CoV-2, 3CL Mpro, 3C Like proteinase, 3CL protease, coronavirus, 3CL proteinase, COVID-19, 3CLpro

Quality Level



NCBI accession no.

shipped in

wet ice

storage temp.


General description

Mpro, 3CL is a critical enzyme for the virus life cycle. It activity yield non-structural proteins that are crucial for genome replication and Coronavirus virion production: RNA-dependent RNA polymerase, a helicase, ribonucleases and 3CLpro itself, from two types of polyproteins (pp1a and pp1ab).The maturation of SARS-Cov2 virus (SARS coronavirus) depends on cleavage of the overlapping large polyproteins 1a and 1ab by two viral proteases:
  • Mpro (main protease)
  • PLpro (Papain-like protease)

SARS-CoV Mpro, 3CL exists as a homodimer and each protomer has an active site. The proteolytic cleavage of 1ab polyprotein by Mpro occurs at 11 sites: 7 sites within the 1a polyprotein, and 11 sites within the 1ab polyprotein. This results in maturation of 16 viral non-structural proteins.Mpro protease forms a functional homodimer. Both the N-terminus and the C- terminus of Mpro have been shown to be critical for dimer formation and for enzyme function.

The Mpro protease, 3CLpro is an ideal target for antiviral drug design due to its high conservation between different coronavirus strains and absence of functional analogs in the human proteome. Mpro protease from SARS-CoV1 and SARS-CoV2 are functionally identical.

Features and Benefits

Mpro, 3CL Protease (3C-like protease)is the main protease of Human Coronavirus SARS-CoV-2. Mpro 3CL Protease is a cysteine protease. Mpro protease cleaves proteins with sequences including LQ[S/A/G) c-terminal to the glutamine residue.

Physical form

The product is supplied lyophilized from 20 mM HEPES, 2.5% Trehalose, and 0.05% Tween 20

This product contains the complete sequence of Mpro protease (Accession: YP_009725301.1) without any additional tags. The product is supplied lyophilized from 20 mM HEPES, 2.5% Trehalose, and 0.05% Tween 20.


Health hazard

Signal Word


Hazard Statements

Precautionary Statements

Hazard Classifications

Resp. Sens. 1

Storage Class Code

11 - Combustible Solids



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Certificate of Origin

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Bhupesh Goyal et al.
ACS combinatorial science, 22(6), 297-305 (2020-05-14)
A new coronavirus (CoV) caused a pandemic named COVID-19, which has become a global health care emergency in the present time. The virus is referred to as SARS-CoV-2 (severe acute respiratory syndrome-coronavirus-2) and has a genome similar (∼82%) to that
Chavan Sakshi et al.
Journal of biomolecular structure & dynamics, 1-14 (2021-01-12)
Momordica dioica have proven medicinal potential of antidiabetic, antiviral and immune stimulating properties. Flavonoids and triterpenoids from M. dioica were more extensively investigated for antiviral, antidiabetic and immunomodulatory activities. In this present study, we have predicted the reported bioactive flavonoids
Linlin Zhang et al.
Science (New York, N.Y.), 368(6489), 409-412 (2020-03-22)
The coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) is a global health emergency. An attractive drug target among coronaviruses is the main protease (Mpro, also called 3CLpro) because of its essential role in processing
Huifang Li et al.
Journal of agricultural and food chemistry, 69(41), 12197-12208 (2021-09-30)
Severe acute respiratory syndrome coronavirus (SARS-CoV-2) main protease (Mpro) inhibitors are considered as potential treatments for coronavirus disease 2019, and dietary polyphenols show promise in SARS-CoV-2 Mpro inhibition based on in silico studies. In the present study, we utilize a
Haitao Yang et al.
Current pharmaceutical design, 12(35), 4573-4590 (2006-12-16)
Coronaviruses (CoVs), a genus containing about 26 known species to date, cause highly prevalent diseases and are often severe or fatal in humans and animals. In 2003, a previously unknown coronavirus was identified to be the etiological agent of a

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