Exonuclease News and Research

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Emergence of a new SARS-CoV-2 variant from Southern France

A new study has described the emergence of another new SARS-CoV-2 variant from south-eastern France with Cameroonian origin.

6 Jan 2022

Impact of the rapid spread of the SARS-CoV-2 Omicron variant in Southern Africa

A new study has focused on the genomic profile and early transmission dynamics of Omicron. This study revealed the dominance of the Omicron variant in regions with high levels of population immunity.

23 Dec 2021

The antiviral potential of 4′-fluorouridine as an oral treatment against RSV and SARS-CoV-2

New research reports 4’-Fluorouridine (4′-FlU) as an oral antiviral against RSV and SARS-CoV-2.

7 Dec 2021

Ensemble cryo-electron microscopy uncovers conformational states of the nsp13 helicase of SARS-CoV-2

With this background, the goal of a new study published on the bioRxiv* preprint server was to use cryo-electron microscopy to investigate the nsp13 helicase conformational states in order to gain insights of how nsp13 functions during viral transcription/replication.

16 Nov 2021

GIST researchers unravel coordination mechanism of base excision repair

A new study by researchers from the Gwangju Institute of Science and Technology in the Republic of Korea has revealed the mechanism of DNA repair by enzymes exonuclease III and polymerase I by utilizing single molecule fluorescence resonance energy transfer (smFRET)-enabled dynamic observation.

14 Sep 2021

New study identifies novel compound as promising pan-coronavirus drug candidate

A recent study describes a novel compound with frameshifting capability against MERS-CoV, inhibiting viral propagation within infected cells.

23 Aug 2021

How replication and recombination contribute to emergence of SARS-CoV-2 variants

The coronavirus disease 2019 (COVID-19) pandemic has been caused by the rapid outbreak of a novel coronavirus, namely, severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). SARS-CoV-2 was first reported in late December 2019 in Wuhan, China. Since then, the virus has already claimed more than 4.3 million lives worldwide.

13 Aug 2021

New article focuses on drug discovery targeting SARS-CoV-2

The July edition of SLAS Discovery is a Special Edition featuring the cover article, "Development of a High-Throughput Screening Assay to Identify Inhibitors of the SARS-CoV-2 Guanine-N7-Methyltransferase Using RapidFire Mass Spectrometry" by Lesley-Anne Pearson, Charlotte J. Green, Ph.D., De Lin, Ph.D., Alain-Pierre Petit, Ph.D., David W. Gray, Ph.D., Victoria H. Cowling, Ph.D., and Euan A. F. Fordyce, Ph.D., (Drug Discovery Unit, School of Life Sciences, University of Dundee, Dundee, UK).

1 Jul 2021

SARS-CoV-2 NSP14 induces potent inflammation via NF-κB pathways, finds study

SARS-CoV-2 has a single-stranded RNA genome encoding both structural and non-structural proteins. Of these, the latter is known to play a variety of roles in viral replication and the assembly of new viral particles, as well as in suppressing cellular immune responses. A new study reports the activity of one such protein, the non-structural protein 14 (NSP14), which activates the inflammatory mediator NF-κB to trigger intense inflammation.

31 May 2021

SARS-CoV-2 spike mutation can independently predict viral evolution

A team of scientists from Portugal has recently estimated the rate of mutation in two circulating variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) using experimental evolution methods. Their findings reveal that in a condition with no immune surveillance, SARS-CoV-2 can potentially undergo evolution during the first stages of infection. The study is currently available on the bioRxiv* preprint server.

21 May 2021

Scientists use cryo-electron microscopy to unravel how 'guardian' of the genome works

Scientists from the Genomic Integrity and Structural Biology Group led by Rafael Fernández-Leiro at the Spanish National Cancer Research Centre have discovered how certain proteins ensure the repair of errors introduced into the DNA during its replication.

6 Apr 2021

Remdesivir inhibits SARS-CoV-2 replication by preventing RdRp-mediated RNA translocation

A new study describes the in vitro mechanism by which remdesivir kinetically inhibits the replication of the virus that causes COVID-19, SARS-CoV-2.

18 Dec 2020

Errant DNA triggers immune system response against cancer

DNA that ends up where it doesn't belong in cancer cells can unleash an immune response that makes tumors more susceptible to immunotherapy, the results of two UT Southwestern studies indicate.

17 Dec 2020

Research shows how remdesivir inhibits SARS-CoV-2 replication

In a recent bioRxiv preprint, a research team from Germany, Goran Kokic et al. study the molecular mechanism of remdesivir-induced stalling of RdRp - using synthetic RNA chemistry, biochemistry, and cryo-electron microscopy.

2 Nov 2020

Sofosbuvir combined with other antivirals is more effective against COVID-19, shows study

Columbia Engineering researchers report that Sofosbuvir-terminated RNA is more resistant to the proofreader of SARS-CoV-2, the virus that causes COVID-19, than Remdesivir-terminated RNA.

7 Oct 2020

Small molecule drugs binding Mac1 domain of SARS-CoV-2

Now, an intriguing new study out of the University of Wisconsin-Milwaukee reveals that numerous small molecule drugs like the proton pump inhibitors omeprazole and rabeprazole bind the important Mac1 domain on the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus.

8 Jul 2020

SARS-CoV-2 genome shows mutation hotspots and type-specific distribution

Now, a new study published on the preprint server bioRxiv reports on a large scale analysis of SARS-CoV-2 genomes and reveals a clonal geo-distribution and rich genetic variations.

5 May 2020

Study reveals SARS-CoV-2 RNA cap structure

A new study published on the preprint server bioRxiv in April 2020 reports the discovery of the structure of the cap created by the novel coronavirus on virally encoded mRNAs. The finding could help create new antiviral strategies.

29 Apr 2020

Novel technique accurately maps gene-regulation proteins

A novel technique has been developed and demonstrated at Penn State University to map the proteins that read and regulate chromosomes -- the string-like structures inside cells that carry genes.

19 Jan 2012

New England Biolabs adds OneTaq and OneTaq Hot Start DNA Polymerases to line of PCR reagents

New England Biolabs has expanded its line of PCR reagents to include OneTaq™ and OneTaq Hot Start DNA Polymerases. Optimized blends of Taq and Deep Vent® DNA Polymerases, these new products offer robust amplification across a wide range of templates, including routine, AT-rich and GC-rich amplicons.

From New England Biolabs 15 Feb 2011