Hepatitis C Virus E1 Glycoprotein Folding and Degradation
Author Information
Author(s): Botti Valentina, Bianchi Alessia, Foung Steven K. H., Merola Marcello
Primary Institution: Novartis Vaccines and Diagnostics, Siena, Italy
Hypothesis
Can the E1 glycoprotein of Hepatitis C Virus achieve proper folding without the presence of E2?
Conclusion
E1 can fold correctly when expressed alone, but it degrades rapidly, while E2 requires E1 for proper folding and stability.
Supporting Evidence
- E1 can achieve a DTT-resistant conformation independently of E2.
- E1 expressed alone is degraded within a few hours.
- E2 requires E1 for proper folding and stability.
- Oxidation kinetics of E1 is faster when expressed alone compared to when co-expressed with E2.
Takeaway
The E1 protein of the Hepatitis C virus can fold on its own, but it doesn't last long in cells. E2 needs E1 to fold properly and stay stable.
Methodology
The study analyzed the folding and stability of E1 and E2 glycoproteins expressed in CHO cells using pulse-chase experiments and immunoprecipitation.
Limitations
The study primarily focused on the folding of E1 and E2 in a controlled cell line, which may not fully represent in vivo conditions.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website