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Journal of Virology, April 2007, p. 4343-4347, Vol. 81, No. 8
0022-538X/07/$08.00+0     doi:10.1128/JVI.02478-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

Two Potentially Important Elements of the Hepatitis B Virus Large Envelope Protein Are Dispensable for the Infectivity of Hepatitis Delta Virus{triangledown}

Severin Gudima,1 Anja Meier,1 Roland Dunbrack,1 John Taylor,1* and Volker Bruss2

Fox Chase Cancer Center, Philadelphia, Pennsylvania,1 Department of Virology, University of Göttingen, Göttingen, Germany2

Received 10 November 2006/ Accepted 15 January 2007

Previous studies have attempted to clarify the roles of the pre-S1 and pre-S2 domains of the large envelope protein of hepatitis B virus (HBV) in attachment and entry into susceptible cells. Difficulties arise in that these domains contain regions involved in the nucleocapsid assembly of HBV and overlapping with the coding regions of the viral polymerase and RNA sequences required for reverse transcription. Such difficulties can be circumvented with hepatitis delta virus (HDV), which needs the HBV large envelope protein only for infectivity. Thus, mutated HBV envelope proteins were examined for their effects on HDV infectivity. Changing the C-terminal region of pre-S1 critical for HBV assembly allowed the envelopment of HDV and had no effect on infectivity in primary human hepatocytes. Similarly, a deletion of the 12 amino acids of a putative translocation motif (TLM) in pre-S2 had no effect. Thus, these two regions are not necessary for HDV infectivity and, by inference, are not needed for HBV attachment and entry into susceptible cells.

* Corresponding author. Mailing address: Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111-2497. Phone: (215) 728-2436. Fax: (215) 728-3105. E-mail: john.taylor{at}fccc.edu

{triangledown} Published ahead of print on 24 January 2007.

Journal of Virology, April 2007, p. 4343-4347, Vol. 81, No. 8
0022-538X/07/$08.00+0     doi:10.1128/JVI.02478-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Chai, N., Chang, H. E., Nicolas, E., Han, Z., Jarnik, M., Taylor, J. (2008). Properties of Subviral Particles of Hepatitis B Virus. J. Virol. 82: 7812-7817 [Abstract] [Full Text]  
  • Lepere, C., Regeard, M., Le Seyec, J., Gripon, P. (2007). The Translocation Motif of Hepatitis B Virus Envelope Proteins Is Dispensable for Infectivity. J. Virol. 81: 7816-7818 [Abstract] [Full Text]  


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