Dimerization of Hepatitis E Virus Capsid Protein E2s Domain Is Essential for Virus–Host Interaction
- Xiamen University (China)
- Xiamen University (China); National University of Singapore (Singapore)
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
Hepatitis E virus (HEV), a non-enveloped, positive-stranded RNA virus, is transmitted in a faecal-oral manner, and causes acute liver diseases in humans. The HEV capsid is made up of capsomeres consisting of homodimers of a single structural capsid protein forming the virus shell. These dimers are believed to protrude from the viral surface and to interact with host cells to initiate infection. To date, no structural information is available for any of the HEV proteins. Here, we report for the first time the crystal structure of the HEV capsid protein domain E2s, a protruding domain, together with functional studies to illustrate that this domain forms a tight homodimer and that this dimerization is essential for HEV–host interactions. In addition, we also show that the neutralizing antibody recognition site of HEV is located on the E2s domain. Our study will aid in the development of vaccines and, subsequently, specific inhibitors for HEV.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Biological and Environmental Research (BER); Ministry of Education; National Natural Science Foundation; Key Program in Infectious Diseases; People's Republic of China; Academic Research Fund; National University of Singapore
- Grant/Contract Number:
- SC0012704; B06016; 30500092; 30600106; 30870514; 2006AA020905; 2006AA02A209; 2008ZX10004-015; R154000254112
- OSTI ID:
- 1627893
- Journal Information:
- PLoS Pathogens, Vol. 5, Issue 8; ISSN 1553-7374
- Publisher:
- Public Library of ScienceCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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