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Hepatitis C virus structural proteins and virus-like particles produced in recombinant baculovirus-infected insect cells

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Abstract

Three proteins, namely, the core protein C and envelope glycoproteins E1 and E2, are main structural proteins forming a hepatitis C virus (HCV) virion. The virus structure and assembly and the role of the structural proteins in virion morphogenesis remain unknown because of the lack of an efficient culture system for HCV to be grown in vitro. Highly efficient heterologous expression systems make it possible to obtain self-assembled, nonreplicating, genome-lacking particles that are morphologically similar to intact virions. Using recombinant baculoviruses expressing the HCV structural protein genes in insect cells, the individual HCV structural proteins were expressed to 25–35% of the total cell protein, and the CE1 and E1E2 heterodimers and HCV-like particles were obtained. It was demonstrated that the recombinant C, E1, and E2 proteins underwent posttranslational modification, the glycoproteins formed a noncovalent heterodimer, and HCV- like particles were located in endoplasmic reticulum membranes of infected cells. The formation of E1E2 dimers and HCV-like particles was used to study the effect of E1 glycosylation on the expression and processing of the coat proteins.

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Authors and Affiliations

  1. Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia

    S. N. Belzhelarskaya, N. N. Koroleva, V. V. Popenko, O. V. Orlova, P. M. Rubtzov & S. N. Kochetkov

  2. Chemical Department, Moscow State University, Moscow, 119899, Russia

    V. L. Drutza

Authors
  1. S. N. Belzhelarskaya
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  2. N. N. Koroleva
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  3. V. V. Popenko
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  4. V. L. Drutza
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  5. O. V. Orlova
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  6. P. M. Rubtzov
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  7. S. N. Kochetkov
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Correspondence to S. N. Belzhelarskaya.

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Original Russian Text © S.N. Belzhelarskaya, N.N. Koroleva, V.V. Popenko, V.L. Drutza, O.V. Orlova, P.M. Rubtzov, S.N. Kochetkov, 2010, published in Molekulyarnaya Biologiya, 2010, Vol. 44, No. 1, pp. 107–119.

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Belzhelarskaya, S.N., Koroleva, N.N., Popenko, V.V. et al. Hepatitis C virus structural proteins and virus-like particles produced in recombinant baculovirus-infected insect cells. Mol Biol 44, 97–108 (2010). https://doi.org/10.1134/S0026893310010139

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  • DOI: https://doi.org/10.1134/S0026893310010139

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