COVID-19 Antigens Product Range

Key Applications

Use Sengenics’ correctly folded spike, nucleocapsid or envelope COVID-19 antigens for production of a high-affinity vaccine

Development of an antigen-based COVID-19 sero-diagnostic test for patient screening or immunosurveillance purposes

Fundamental research: characterisation of full-length, correctly folded and functional SARS-CoV-2 antigens

Advantages of Sengenics’ COVID-19 Antigens and Tests

Correctly folded antigens lead to better immunogenic response

Since most antibodies are thought to recognise discontinuous epitopes on their target proteins, it’s critical that antigens used in serological assays or presented to B-cells for antibody-based vaccine development are in a natively-folded form. The use of our KREX™ technology for the production of the SARS-CoV-2 antigens will ensure these antigens are correctly folded, preserving all conformational antibody binding sites.

Higher sensitivity and specificity than antibody/RT-PCR-based test

Serological-based tests enable the quantification of IgM and other types of Immunoglobulin. In the case of infectious diseases, IgM is the first antibody produced by the body to fight a new infection. Therefore, our test will overcome the limitations of current rtPCR tests. It is also crucial for immunosurveillance purposes, during both pre- and post-infection periods, particularly for disease management during a pandemic.

Product Description


Code Product Description Data Sheet Order Link
39501 Recombinant SARS-CoV-2 Nucleocapsid Protein
Expressed using patented KREX functional proteomics technology. Proteins are full-length, folded, functional, with both conformational and non-conformational epitopes preserved. (GenBank accession code: MN908947.3, Protein sequence length (aa): 419, Supplied as 50μl of lysate or 50μg purified protein expressed from sf9 insect cells)
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39502 Recombinant SARS-CoV-2 Spike Protein
Expressed using patented KREX functional proteomics technology. Proteins are full-length, folded, functional, with both conformational and non-conformational epitopes preserved. (GenBank accession code: YP_009724390.1, Protein sequence length (aa): 1273, Supplied as 50μl of lysate from sf9 insect cells)
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39503 Recombinant SARS-CoV-2 Spike (R682S) Protein
Expressed using patented KREX functional proteomics technology. Proteins are full-length, folded, functional, with both conformational and non-conformational epitopes preserved. (GenBank accession code: YP_009724390.1, Protein sequence length (aa): 1273, Supplied as 50μl of lysate from sf9 insect cells)
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39504 Recombinant SARS-CoV-2 Envelope Protein
Expressed using patented KREX functional proteomics technology. Proteins are full-length, folded, functional, with both conformational and non-conformational epitopes preserved. (GenBank accession code: QHD43418.1, Protein sequence length (aa): 75, Supplied as 50μl of lysate from sf9 insect cells)
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39505 Recombinant SARS-CoV (2004) Nucleocapsid Protein
Expressed using patented KREX functional proteomics technology. Proteins are full-length, folded, functional, with both conformational and non-conformational epitopes preserved (GenBank accession code: NP_828858.1, Protein sequence length (aa): 422, Supplied as 50μl of lysate from sf9 insect cells)
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39506 Recombinant MERS-CoV Nucleocapsid Protein
Expressed using patented KREX functional proteomics technology. Proteins are full-length, folded, functional, with both conformational and non-conformational epitopes preserved. (GenBank accession code: AKQ21082.1, Protein sequence length (aa): 413, Supplied as 50μl of lysate from sf9 insect cells)
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39507 Recombinant Influenza A and B Ha Proteins
Expressed using patented KREX functional proteomics technology. Proteins are full-length, folded, functional, with both conformational and non-conformational epitopes preserved. (Supplied as 50μl of lysate or as 50μg of purified protein expressed in sf9 insect cells)
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35908V Sengenics COVID Protein Microarray
Contains correctly folded and functional human SARS-CoV-2 antigens spotted in triplicate. Expressed using patented KREX functional proteomics technology. Proteins are full-length, folded, functional, with both conformational and non-conformational epitopes preserved
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35908R Sengenics Respiratory Virus Protein Microarray
Contains over 60 full-length, correctly folded and functional human SARS-CoV-2 and antigens from other respiratory viruses including influenza A and B, SARS and MERS proteins, spotted in triplicate. Expressed using patented KREX functional proteomics technology. Proteins are full-length, folded, functional, with both conformational and non-conformational epitopes preserved
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39509 Sengenics high-throughput, high multiplex microtitre assay
Contains correctly folded and functional human SARS-CoV-2 antigens plated in triplicate. Expressed using patented KREX functional proteomics technology. Proteins are full-length, folded, functional, with both conformational and non-conformational epitopes preserved
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FEATURED COVID-19 PRODUCTS

COVID Antigens

Recombinant SARS-CoV-2 Nucleocapsid and Spike Protein lysates expressed in baculovirus expression system using the patented KREX™ functional proteomics technology

COVID Antigen Array

Contains full-length, correctly folded and functional human SARS-CoV-2 and antigens from other respiratory viruses including influenza, SARS
and MERS

COVID Microtitre Plate

Contains full-length, correctly folded and functional human SARS-CoV-2 and antigens from other respiratory viruses including influenza, SARS
and MERS

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Sengenics - Functional Proteomics | Krex Technology | Protein Array Supplier

Sengenics is a functional proteomics company that leverages its patented KREX technology for production of full-length, correctly folded and functional proteins. The key application of KREX is the discovery of autoantibody biomarkers for two core medical use cases:  stratification of patients undergoing treatment with autoimmune or cancer drugs and identification of autoantibody biomarkers that may be used to diagnose cancer, autoimmune or neurodegenerative conditions. Some autoantibodies that are identified as diagnostic biomarkers may be protective and have potential in themselves as therapeutic biomolecules.

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