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Genetic Spectrum and Distinct Evolution Patterns of SARS-CoV-2.


ABSTRACT: Four signature groups of frequently occurred single-nucleotide variants (SNVs) were identified in over twenty-eight thousand high-quality and high-coverage SARS-CoV-2 complete genome sequences, representing different viral strains. Some SNVs predominated but were mutually exclusively presented in patients from different countries and areas. These major SNV signatures exhibited distinguishable evolution patterns over time. A few hundred patients were detected with multiple viral strain-representing mutations simultaneously, which may stand for possible co-infection or potential homogenous recombination of SARS-CoV-2 in environment or within the viral host. Interestingly nucleotide substitutions among SARS-CoV-2 genomes tended to switch between bat RaTG13 coronavirus sequence and Wuhan-Hu-1 genome, indicating the higher genetic instability or tolerance of mutations on those sites or suggesting that major viral strains might exist between Wuhan-Hu-1 and RaTG13 coronavirus.

SUBMITTER: Liu S 

PROVIDER: S-EPMC7545136 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Genetic Spectrum and Distinct Evolution Patterns of SARS-CoV-2.

Liu Sheng S   Shen Jikui J   Fang Shuyi S   Li Kailing K   Liu Juli J   Yang Lei L   Hu Chang-Deng CD   Wan Jun J  

Frontiers in microbiology 20200925


Four signature groups of frequently occurred single-nucleotide variants (SNVs) were identified in over twenty-eight thousand high-quality and high-coverage SARS-CoV-2 complete genome sequences, representing different viral strains. Some SNVs predominated but were mutually exclusively presented in patients from different countries and areas. These major SNV signatures exhibited distinguishable evolution patterns over time. A few hundred patients were detected with multiple viral strain-representi  ...[more]

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