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Molecular simulations reveal detailed structure and dynamics of SARS-CoV-2 spike protein

Recently, researchers reported a study in which they analyzed the structure and dynamics of the spike protein using multiple molecular dynamic simulations. Their study is published on the preprint server bioRxiv.

19 Oct 2020

Why blood type O might lower risk for SARS-CoV-2 infection

The author hypothesizes that people with non-O blood groups may have highest contact with the SARS-CoV-2 virus via the formation of in intermediate structure, resulting in possibly higher infection rates and more severe symptoms.

12 Oct 2020

Mass production of SARS-CoV-2 ORF8 protein using a chemical-inducible system in tobacco BY-2 cells

Researchers from the Japan Advanced Institute of Science and Technology (JAIST) and Ishikawa Prefectural University, Japan, recently attempted to synthesize the ORF8 protein with the help of a chemical-inducible protein production system using tobacco BY-2 cells. This study has been published demonstrated in the preprint server, bioRxiv.

9 Oct 2020

Advanced model reveals dynamic motions of SARS-COV-2 spike-shielding glycans

A recent paper published on the preprint server bioRxiv in September 2020 discusses the dynamic interactions of the spike protein glycan shield, which may be of great value in developing therapeutic compounds to fight severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).

5 Oct 2020

A cost-effective scalable production of SARS-CoV-2 RBD in yeast

A new study by the Argentinian AntiCovid Consortium and published in the preprint server bioRxiv* in September 2020 reports on the successful characterization of the conformation and stability of the SARS-CoV-2 spike protein receptor-binding domain (RBD) in two different cell systems. This may help to accelerate the development of vaccines and neutralizing antibodies.

21 Sep 2020

SARS-CoV-2 Neucleocapside (N) protein is heavily glycosylated

However, the nucleocapsid (N) protein is also extremely abundant and, therefore, a useful target for both vaccine and diagnostic test development. A new study published on the preprint server bioRxiv in August 2020 reveals the structure of this protein, a valuable step in using it for these purposes.

30 Aug 2020

Oral sex can trigger bacterial vaginosis

A new study published in the journal PLOS Biology has revealed diverse microbial populations can facilitate vaginal colonization of pathogens, which in turn can prolong the characteristics of bacterial vaginosis, a condition characterized by an imbalance of vaginal microbiome. The study findings also provide evidence linking oral sex with bacterial vaginosis.

26 Aug 2020

Coronacept - A trap-and-destroy molecule against SARS-CoV-2

A new study published on the preprint server bioRxiv* in August 2020 reports a novel engineered molecule based on human and other mammalian orthologues of ACE2 fused with the Fc part of the antibody. This molecule interacts more tightly with the viral receptor-binding domain (RBD) to constitute a powerful immunoadhesin that targets the virus for destruction.

17 Aug 2020

De novo designed SARS-CoV-2 nanoparticle vaccine

In light of the continuing threat to public health, social functioning, and economic activity posed by the COVID-19 pandemic, scientists are working urgently to bring out a vaccine that is both safe and effective, and capable of mass production. A new paper published on the preprint server bioRxiv* in August 2020 shows that such a vaccine may be produced by using arrays of one severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) protein on a nanoparticle platform.

14 Aug 2020

C-type lectin receptors play a role in SARS-CoV-2 infection

A new study published on the preprint server bioRxiv in August 2020 confirms and extends earlier findings showing that a type of sugar-based receptor on innate immune cells promotes the entry of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) into other cells that carry the viral receptor, angiotensin-converting enzyme 2 (ACE2).

12 Aug 2020

Researchers identify a useful biomarker for intestinal diseases

Enzymes used by bacteria to break down mucus in the gut could provide a useful biomarker for intestinal diseases, according to new research published in Nature Communications.

11 Aug 2020

Speed of Novavax vaccine development does not compromise quality of the SARS-CoV-2 immunogen

A new study by researchers from the Scripps Research Institute and Novavax Inc. in the US affirms the structural integrity of the full-length SARS-CoV-2 spike glycoprotein immunogen. It enables the interpretation of immune responses to this multivalent nanoparticle immunogen. Their results are currently available on bioRxiv preprint server.

9 Aug 2020

SARS-CoV-2 spike protein recognized by innate immune receptors in a glycan-dependent way

The spread of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) depends on its ability to infect new host cells following its replication and release from infected cells. This pivots on its ability to bind to cell surface receptors like the ACE2 enzyme.

3 Aug 2020

War of sugars - estrogen provides protection in COVID-19

Now a new study published on the preprint server bioRxiv in July 2020 reports that sex hormones could affect the function of the fusion protein that is dependent upon the human ACE2 receptor, thus preventing the entry of the virus into the host cell.

31 Jul 2020

Emergent SARS-CoV-2 D614G spike mutation more infective due to "open" morphology

Researchers from the Los Alamos National Laboratory and Duke Human Vaccine Institute & Department of Surgery demonstrated that globally prevalent severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) with the amino acid substitution D614G in the spike protein is much more infective due to profitable binding encounters with the host receptors.

28 Jul 2020

Glycome shift in epidermal stem cells could serve as potential biomarker of aging

Age shows nowhere better than on the skin. The ravages of time on skin and the epidermal stem cells that differentiate to replenish its outer layer have been hypothesized, but there has been no method to evaluate their aging at the molecular level.

21 Jul 2020

New mutation in common subtype of influenza virus helps evade immune response

Strains of a common subtype of influenza virus, H3N2, have almost universally acquired a mutation that effectively blocks antibodies from binding to a key viral protein, according to a study from researchers at Johns Hopkins Bloomberg School of Public Health.

12 Jul 2020

Study of glycosylation on SARS-CoV-2 spike protein

The first intimation of the current COVID-19 crisis came with the news of severe pneumonic illness caused by an unknown agent in a Chinese city called Wuhan, issued on the last day of 2019. Following this, researchers found the cause to be a novel coronavirus, closely related to the earlier SARS virus, now called severe acute respiratory syndrome coronavirus 2.

8 Jul 2020

Spike proteins of SARS-CoV-2 covered by mobile glycans that shield its surface

A new study of the structural dynamics of the SARS-CoV-2 spike protein published in the preprint server bioRxiv in July 2020 reports on the epitopes that could be possible immune targets for the development of vaccines.

7 Jul 2020

Striking CryoEM image of SARS-CoV-2

A new study by researchers from the UK and Germany and published on the preprint server bioRxiv in June 2020 reports the results of a detailed study of the S protein on the intact virus, using cryoelectron microscopy (cryoEM) and tomography. This could help understand the conformation of the S protein on the virion and how it interacts with neutralizing antibodies.

30 Jun 2020