Analysis of Glycopeptides from SARS-CoV-2 Spike and ACE2 Proteins
Author Information
Author(s): Song Ju Hwan, Jang Sangeun, Choi Jin-Woong, Hwang Seoyoung, Kim Kyoung Heon, Kim Hye-Yeon, Park Sun Cheol, Lee Wonbin, Lee Ju Yeon, Fujimuro Masahiro
Primary Institution: Korea Basic Science Institute
Hypothesis
The glycosylation profiles of the SARS-CoV-2 spike protein and ACE2 receptor influence their interaction and function.
Conclusion
This study provides insights into the glycosylation patterns of SARS-CoV-2 proteins, which may impact vaccine and therapeutic development.
Supporting Evidence
- The study identified 148 N-glycopeptides and 28 O-glycopeptides from the spike protein.
- Post-translational modifications like mannose-6-phosphate were reported for the first time in these proteins.
- Glycosylation patterns were shown to influence protein function and immunogenicity.
- Different expression systems (human cells vs. plant cells) resulted in distinct glycosylation profiles.
- Quantitative analysis revealed dominant glycosylation sites for RBD, S2, and ACE2 proteins.
Takeaway
Scientists studied how sugars attached to the spike protein and ACE2 receptor affect how the virus enters cells, which can help in making better vaccines.
Methodology
The study used high-resolution mass spectrometry to analyze glycopeptides from recombinant spike and ACE2 proteins expressed in different cell systems.
Digital Object Identifier (DOI)
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