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Article ; Online: Impacts of reference selection on the assembly of suspicious coronavirus genome.

Liu, Yuan / Yan, Changhui

Journal of bioinformatics and computational biology

2021  Volume 19, Issue 3, Page(s) 2140005

Abstract: ... of suspicious coronavirus (CoV) found in pangolins, SARS-CoV-2 was used as a reference in most of the previous ... genome assembly. We explored various representative CoVs as the reference genome, and found significant ... considered as a reference for assembling suspicious CoV found in pangolins and other potential ...

Abstract The pandemic caused by SARS-CoV-2 has had a significant impact on the whole world. In a theory of the origin of SARS-CoV-2, pangolins are considered as a potential intermediate host. To assemble the genome of suspicious coronavirus (CoV) found in pangolins, SARS-CoV-2 was used as a reference in most of the previous studies, implicitly assuming the pangolin CoV and SARS-CoV-2 are the closest neighbors in evolution. However, this assumption may not be true. We investigated how the choice of reference genome affected the resulting CoV genome assembly. We explored various representative CoVs as the reference genome, and found significant differences in the resulting assemblies. The assembly obtained using RaTG13 as a reference showed better statistics in total length, N50, and pairwise distance reconstruction (PDR) scores than the assembly guided by SARS-CoV-2, indicating that RaTG13 may be a better reference. Therefore, RaTG13 should also be considered as a reference for assembling suspicious CoV found in pangolins and other potential intermediate hosts.
MeSH term(s) Animals ; Coronavirus/genetics ; Coronavirus/isolation & purification ; Genome, Viral ; Genomics/methods ; Genomics/standards ; Pangolins/virology ; Phylogeny ; SARS-CoV-2/genetics
Language English
Publishing date 2021-05-06
Publishing country Singapore
Document type Journal Article
ZDB-ID 2115015-1
ISSN 1757-6334 ; 0219-7200
ISSN (online) 1757-6334
ISSN 0219-7200
DOI 10.1142/S0219720021400059
Database MEDical Literature Analysis and Retrieval System OnLINE

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