Viral Antigens
Product List
CoV-2 Spike E-Mosaic
Coronavirus 2019 Spike E-Mosaic Recombinant
The E.Coli derived recombinant protein contains the Coronavirus 2019 spike Envelope Mosaic immunodominant regions having a Mwq of 40.5 kDa, fused to 6xHis tag at C-terminal.
CoV-2 Spike S1 (200-800)
Coronavirus 2019 Spike S1 (200-800 a.a.) Recombinant
The E.Coli derived recombinant protein contains the Coronavirus 2019 Spike S1 (200-800 a.a.) region, fused to 6xHis tag at C-terminal
CoV-229E
Coronavirus 229E Recombinant
The Recombinant Human Coronavirus 229E, E.Coli derived, 359 amino acids, contains the nucleocapsid immunodominant regions. The protein is fused to a 6xHis tag at C-terminal and purified by standard chromatography techniques.
CoV-2-S1
Coronavirus 2019 Spike Glycoprotein-S1, Recombinant
The HEK293 derived recombinant protein contains the Novel Coronavirus 2019-nCoV Spike Glycoprotein S1, Wuhan-Hu-1 strain, amino acids 1-674 fused to Fc tag at C-terminal.
CoV-2-S1 (319-541)
Coronavirus 2019 Spike Glycoprotein-S1 Receptor Binding Domain (319-541 a.a), Recombinant
The HEK293 derived recombinant protein contains the Coronavirus 2019 Spike Glycoprotein S1 Receptor Binding Domain [ RBD ], Wuhan-Hu-1 strain, amino acids 319-541 fused to His tag at C-terminal.
CoV-2-S1 (319-541), Biotin
Coronavirus 2019 Spike Glycoprotein-S1 Receptor Binding Domain (319-541 a.a), Biotinylated Recombinant
The HEK293 derived Biotinylated recombinant protein contains the Coronavirus 2019 Spike Glycoprotein S1 Receptor Binding Domain [ RBD ], Wuhan-Hu-1 strain, amino acids 319-541 fused to His tag & AVI tag at C-terminal and having a molecular mass of 28.7kDa.
CoV-2-S1 (319-541), Fc
Coronavirus 2019 Spike Glycoprotein-S1 Receptor Binding Domain (319-541 a.a), Fc Recombinant
The HEK293 derived recombinant protein contains the Coronavirus 2019 Spike Glycoprotein S1 Receptor Binding Domain [ RBD ], Wuhan-Hu-1 strain, amino acids 319-541 fused to Fc tag at C-terminal.
CoV-2-Spike (1-1211)
Coronavirus 2019 Spike (1-1211 a.a.), Recombinant
The CHO derived recombinant protein contains the Coronavirus 2019-Spike Full-Length protein, Wuhan-Hu-1 strain, amino acids 1-1211 having a Mw of 134 kDa fused to His tag at C-terminal. The furin cleavage site (682- 685 a.a.) has been mutated from RRAR to SRAS and the transmembrane domain & intravirion part was replaced with a glycine-serine linker + His-tag
CoV-2-Spike (1-260)
Coronavirus 2019 Spike (1-260 a.a.), Recombinant
The HEK293 derived recombinant protein contains the Coronavirus 2019-Spike N-Terminal Domain, Wuhan-Hu-1 strain, amino acids 1-260 fused to Fc tag at C-terminal.
CoV-NL63
Coronavirus NL63 Recombinant
Recombinant Coronavirus NL63 c-terminal nucleoprotein produced in E. coli contains 221-340 amino acids and fused to a 6 a.a. His tag a c-terminal having a total of 130 a.a..
Introduction
Severe Acute Respiratory Syndrome (SARS) is a viral respiratory illness caused by a coronavirus known as SARS-CoV. It was first identified in 2003 during an outbreak that began in China and spread to other countries . SARS-CoV belongs to the family Coronaviridae, which is divided into four genera: Alpha, Beta, Gamma, and Delta coronaviruses . SARS-CoV is classified under the Betacoronavirus genus.
Key Biological Properties: SARS-CoV is an enveloped, positive-sense, single-stranded RNA virus. It has a crown-like appearance due to spike proteins on its surface .
Expression Patterns and Tissue Distribution: SARS-CoV primarily infects the respiratory tract, but it can also affect other organs such as the gastrointestinal tract, liver, and kidneys . The virus binds to the angiotensin-converting enzyme 2 (ACE2) receptor, which is widely distributed in various tissues, including the lungs, heart, and intestines .
Primary Biological Functions: The primary function of SARS-CoV is to replicate within host cells. The virus hijacks the host’s cellular machinery to produce viral RNA and proteins, leading to the assembly of new virions .
Role in Immune Responses and Pathogen Recognition: SARS-CoV triggers an immune response by activating various immune cells and signaling pathways. The spike protein of the virus is recognized by the host’s immune system, leading to the production of neutralizing antibodies .
Mechanisms with Other Molecules and Cells: SARS-CoV enters host cells by binding to the ACE2 receptor and undergoing proteolytic cleavage by host cell proteases such as TMPRSS2 . This facilitates viral entry and fusion with the host cell membrane.
Binding Partners and Downstream Signaling Cascades: The binding of SARS-CoV to ACE2 triggers downstream signaling cascades that modulate immune responses and inflammation. The virus can also evade immune detection by interfering with interferon signaling pathways .
Transcriptional Regulation: The expression of SARS-CoV genes is tightly regulated by viral and host factors. Transcription factors such as SP1 and HNF4α play crucial roles in regulating the expression of the ACE2 receptor, which is essential for viral entry .
Post-Translational Modifications: SARS-CoV proteins undergo various post-translational modifications, including phosphorylation, glycosylation, and ubiquitination, which are critical for viral replication and immune evasion .
Biomedical Research: SARS-CoV has been extensively studied to understand viral pathogenesis and host immune responses. This research has led to the development of diagnostic tools and therapeutic strategies .
Diagnostic Tools: Techniques such as polymerase chain reaction (PCR) and enzyme-linked immunosorbent assay (ELISA) are used to detect SARS-CoV infection .
Therapeutic Strategies: Antiviral drugs, monoclonal antibodies, and vaccines have been developed to combat SARS-CoV infection. These therapeutic strategies target various stages of the viral life cycle .
Throughout the Life Cycle: SARS-CoV plays a critical role in the viral life cycle, from initial infection to replication and assembly of new virions. The virus hijacks the host’s cellular machinery to produce viral RNA and proteins, leading to the assembly of new virions . The N protein of SARS-CoV is essential for packaging the viral RNA into new virions and facilitating their release from host cells .
