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10.1017/S0950268820002599

http://scihub22266oqcxt.onion/10.1017/S0950268820002599
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33100263!7653495!33100263
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suck abstract from ncbi


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pmid33100263      Epidemiol+Infect 2020 ; 148 (ä): e262
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  • ORF3a mutation associated with higher mortality rate in SARS-CoV-2 infection #MMPMID33100263
  • Majumdar P; Niyogi S
  • Epidemiol Infect 2020[Oct]; 148 (ä): e262 PMID33100263show ga
  • Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has recently caused acute respiratory distress syndrome affecting more than 200 countries with varied mortality rate. Successive genetic variants of SARS-CoV-2 become evident across the globe immediately after its complete genome sequencing. Here, we found a decent association of SARS-CoV-2 ORF3a mutation with higher mortality rate. Extensive in silico studies revealed several amino acid changes in ORF3a protein which ultimately leads to diverse structural modifications like B cell epitope loss, gain/loss of phosphorylation site and loss of leucine zipper motif. We could further relate these changes to the enhanced antigenic diversity of SARS-CoV-2. Through protein-protein network analysis and functional annotation studies, we obtained a close federation of ORF3a protein with host immune response via divergent signal transduction pathways including JAK-STAT, chemokine and cytokine-related pathways. Our data not only unveil the fairly appreciable association of ORF3a mutation with higher mortality rate, but also suggest a potential mechanistic insight towards the immunopathogenic manifestation of SARS-CoV-2 infection.
  • |Amino Acid Sequence[MESH]
  • |Betacoronavirus/*genetics[MESH]
  • |COVID-19[MESH]
  • |Coronavirus Infections/immunology/*mortality[MESH]
  • |Cytokines/immunology[MESH]
  • |Humans[MESH]
  • |Immune Evasion[MESH]
  • |Mutation[MESH]
  • |Mutation Rate[MESH]
  • |Pandemics[MESH]
  • |Pneumonia, Viral/immunology/*mortality[MESH]
  • |SARS-CoV-2[MESH]
  • |Signal Transduction[MESH]
  • |Viral Regulatory and Accessory Proteins/*genetics[MESH]


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