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New recombinant eukaryotic SARS-CoV-2, S1-S2 spike proteins for improved diagnostic testing of COVID-19

Aalto Bio Reagents
20 May 2020
Edward Carter
Publishing / Media

Product news

Aalto Bio Reagents has announced the availability of its new range of recombinant SARS-CoV-2 spike (S) proteins for diagnostic test manufacturers, vaccine developers and researchers globally. Among all structural proteins of SARS-CoV-2, the S protein is the main antigenic component that is responsible for inducing host immune responses and neutralizing antibodies. This makes it the principal focus of therapeutic and vaccine design for COVID-19.

The S protein of SARS-CoV-2 is located on the surface of the viral particles and is comprised of two functional units, S1 and S2. The N-terminal S1 subunit is responsible for virus–receptor binding and the C-terminal S2 subunit mediates virus–cell membrane fusion. When used solely or in combination with our new insect-derived Nucleocapsid protein (N) (code BM 6424), our S1-S2 chimeric glycoprotein (code BM 6422) has demonstrated excellent reactivity in ELISA for detection of IgA, IgG and IgM antibodies against SARS-CoV-2.

“Patients continue to be screened for the virus by PCR on the frontline”, said Philip Noone, CEO of Aalto Bio Reagents, “however there is an important need for serological tests as well to detect all those mild or even asymptomatic cases that may otherwise be missed. Having diagnostic tests that can work in different healthcare settings will be the critical next step in battling this virus and crucial to their development is the selection of high-quality, raw materials used to design them. Our new S1, S2 glycoproteins and S1-S2 Chimeric proteins, in addition to our E. coli-derived N protein launched in February, have been rapidly developed to meet this urgent need”.

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ImmunologyImmunological techniques measure and characterize immune responses. Immunology kits and analysis systems often use techniques such as ELISA, radioimmunoassay (RIA) and immunodiffusion assays, Immunohistochemistry, and flow cytometry. Immunologists use equipment such as flow Cytometers, plate readers, plate washers and fluorescent microscopes.Protein ExpressionProtein expression is the utilization of cell machinery for the synthesis of proteins and has become a critical tool in biotherapeutic, genomic, and proteomic research. Produce recombinant proteins with expression vectors in combination with a host cell suitable for high-level protein expression. For production of toxic proteins, consider cell-free expression vectors. Create and monitor post-translational modifications with protein modification kits. Find the best protein expression products in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Protein StructureProtein structure refers to the three-dimensional arrangement of amino acids in proteins, determining their function. Understanding protein structure is key in drug discovery, enzymology, and molecular biology. Explore protein structure analysis tools in our peer-reviewed product directory; compare products, check reviews, and get pricing directly from manufacturers.CoronavirusCoronaviruses are a large family of viruses that can cause illnesses ranging from the common cold to more severe diseases like COVID-19. Research into the biology, transmission, and treatment of coronaviruses has become a global priority, particularly since the emergence of SARS-CoV-2. Understanding the virus�s structure and behavior is essential for developing vaccines, diagnostics, and antiviral treatments. Explore our peer-reviewed product directory to discover the latest research tools, diagnostic tests, vaccines, and treatments for coronavirus, compare products, read reviews, and receive pricing directly from manufacturers.Protein BiologyThe analysis of protein expression, identity and function is vital for many areas of life science research and drug discovery. Some of the most commonly used techniques in protein analysis include Western blotting, electrophoresis and mass spectrometry.

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