ArticleZhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences2020
[Comparative analysis of structural characteristics and epitopes in S proteins between SARS-CoV-2 and SARS-CoV].
Article in Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Abstract
objectiveTo provide data support for the study of pathogenic mechanism of SARS-CoV-2 at the molecular level, and provide suitable candidate targets for vaccine, antibody and drug research and development through comparative analysis for structural characteristics and epitopes of S protein of SARS-CoV-2 and SARS-CoV.
methodsBased on the reference sequences of S protein, physical and chemical properties, hydrophobicity, signal peptide, transmembrane region, domain, secondary structure, tertiary structure analysis and antigenic epitopes prediction were carried out. Meanwhile, the tissue expression, related pathways and reactome pathways of angiotensis Ⅰ converting enzyme 2 (ACE2) and C-type lectin domain family 4 member M (CLEC4M) receptors were analyzed.
resultsThe amino acid sequence of S protein of SARS-CoV-2 and SARS-CoV has a 75.80% consistency. The structural characteristics of the two coronaviruses are highly consistent, but the secondary structure and tertiary structure of SARS-CoV-2 is not as obvious as SARS-CoV. ACE2 and CLEC4M are expressed in alimentary system, heart, kidney, lung and placenta. The main related the pathways of renin-angiotensin system, protein digestion and absorption pathway, and the reactome pathways of metabolism of angiotensinogen to angiotensins, GPCR ligand binding, are related to typical symptoms of coronavirus disease 2019 induced by SARS-CoV-2. Three pairs of highly or completely homologous epitopes of S protein were obtained. The 600-605, 695-703 and 888-896 amino acid residues in SARS-CoV-2 were highly homologous with 586-591, 677-685 and 870-878 amino acid residues in SARS-CoV, respectively.
conclusionsThe similarity of S protein of SARS-CoV-2 and SARS-CoV determines that they have similar infection patterns and clinical manifestations. The candidate epitopes with high reliability can provide reference for virus diagnosis and vaccine development.
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