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Notable Sequence Homology of the Orf10 Protein Introspects the Architecture of Sars-Cov-2 Publisher Pubmed



Hassan SS1 ; Attrish D2 ; Ghosh S3 ; Choudhury PP4 ; Uversky VN5 ; Aljabali AAA6 ; Lundstrom K7 ; Uhal BD8 ; Rezaei N9, 26 ; Seyran M10 ; Pizzol D11 ; Adadi P12 ; Soares A13 ; Abd Elaziz TM13, 14 Show All Authors
Authors
  1. Hassan SS1
  2. Attrish D2
  3. Ghosh S3
  4. Choudhury PP4
  5. Uversky VN5
  6. Aljabali AAA6
  7. Lundstrom K7
  8. Uhal BD8
  9. Rezaei N9, 26
  10. Seyran M10
  11. Pizzol D11
  12. Adadi P12
  13. Soares A13
  14. Abd Elaziz TM13, 14
  15. Kandimalla R15, 27
  16. Tambuwala MM16
  17. Azad GK17
  18. Sherchan SP18
  19. Baetasdacruz W19
  20. Lal A20
  21. Palu G21
  22. Takayama K22
  23. Serranoaroca A23
  24. Barh D24
  25. Brufsky AM25

Source: International Journal of Biological Macromolecules Published:2021


Abstract

The current Coronavirus Disease 19 (COVID-19) pandemic, caused by Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) shows similar pathology to MERS and SARS-CoV, with a current estimated fatality rate of 1.4%. Open reading frame 10 (ORF10) is a unique SARS-CoV-2 accessory protein, which contains eleven cytotoxic T lymphocyte (CTL) epitopes each of nine amino acids in length. Twenty-two unique SARS-CoV-2 ORF10 variants have been identified based on missense mutations found in sequence databases. Some of these mutations are predicted to decrease the stability of ORF10 in silico physicochemical and structural comparative analyses were carried out on SARS-CoV-2 and Pangolin-CoV ORF10 proteins, which share 97.37% amino acid (aa) homology. Though there is a high degree of ORF10 protein similarity of SARS-CoV-2 and Pangolin-CoV, there are differences of these two ORF10 proteins related to their sub-structure (loop/coil region), solubility, antigenicity and shift from strand to coil at aa position 26 (tyrosine). SARS-CoV-2 ORF10, which is apparently expressed in vivo since reactive T cell clones are found in convalescent patients should be monitored for changes which could correlate with the pathogenesis of COVID-19. © 2021 Elsevier B.V.
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