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A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
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Genotyping coronavirus SARS-CoV-2: methods and implications.

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  • 1Department of Mathematics, Statistics, and Computer Science, University of Illinois at Chicago, Chicago, IL 60607, USA.

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Summary
This summary is machine-generated.

This study introduces a genome-based genotyping method to track Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) evolution. The analysis reveals frequent mutations in key genes, crucial for understanding and controlling COVID-19 transmission.

Keywords:
2019-nCoVCOVID-19GenotypingSARS-CoV-2Single-nucleotide polymorphism

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Area of Science:

  • Virology
  • Genomics
  • Epidemiology

Background:

  • Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) causes the global COVID-19 pandemic, necessitating understanding of its evolution and transmission.
  • Genotyping of virus isolates is crucial for monitoring viral genetic variations and tracking epidemic spread.

Purpose of the Study:

  • To present an accurate method for genotyping SARS-CoV-2 using complete viral genomes.
  • To analyze the genetic variations and mutation patterns of SARS-CoV-2 isolates globally.

Main Methods:

  • Utilized multiple sequence alignments of complete SARS-CoV-2 genome isolates against the reference genome.
  • Employed single-nucleotide polymorphism (SNP) genotyping measured by Jaccard distances to assess isolate relationships.

Main Results:

  • Identified specific multiple mutations as the predominant mutation type in circulating SARS-CoV-2 strains.
  • Genotyping analysis revealed frequent mutations in genes encoding S proteins, RNA polymerase, RNA primase, and nucleoprotein.

Conclusions:

  • The proposed genotyping method is effective for monitoring pathogenic virus evolution and genetic variations.
  • Understanding frequent mutations in key viral genes is critical for developing effective vaccines and controlling COVID-19.