| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Animal: DNA Viruses |
Department of Biochemistry, Health Sciences Centre, McMaster University, 1200 Main St W., Hamilton, Ontario, Canada L8N 3Z51
Author for correspondence: Hara Ghosh.Fax +1 905 522 9033. e-mail ghosh{at}fhs.mcmaster.ca
Glycoprotein gB is the most highly conserved glycoprotein in the herpesvirus family and plays a critical role in virus entry and fusion. Glycoprotein gB of herpes simplex virus type 1 contains a hydrophobic stretch of 69 aa near the carboxy terminus that is essential for its biological activity. To determine the role(s) of specific amino acids in the carboxy-terminal hydrophobic region, a number of amino acids were mutagenized that are highly conserved in this region within the gB homologues of the family Herpesviridae. Three conserved residues in the membrane anchor domain, namely A786, A790 and A791, as well as amino acids G743, G746, G766, G770 and P774, that are non-variant in Herpesviridae, were mutagenized. The ability of the mutant proteins to rescue the infectivity of the gB-null virus, K082, in trans was measured by a complementation assay. All of the mutant proteins formed dimers and were incorporated in virion particles produced in the complementation assay. Mutants G746N, G766N, F770S and P774L showed negligible complementation of K082, whereas mutant G743R showed a reduced activity. Virion particles containing these four mutant glycoproteins also showed a markedly reduced rate of entry compared to the wild-type. The results suggest that non-variant residues in the carboxy-terminal hydrophobic region of the gB protein may be important in virus infectivity.
This article has been cited by other articles:
|
|
 |
|
  D. G. Meckes Jr. and J. W. Wills Structural Rearrangement within an Enveloped Virus upon Binding to the Host Cell J. Virol., November 1, 2008; 82(21): 10429 - 10435. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
B. P. Hannah, E. E. Heldwein, F. C. Bender, G. H. Cohen, and R. J. Eisenberg Mutational Evidence of Internal Fusion Loops in Herpes Simplex Virus Glycoprotein B J. Virol., May 1, 2007; 81(9): 4858 - 4865. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
W. Li, T. J. Minova-Foster, D. D. Norton, and M. I. Muggeridge Identification of functional domains in herpes simplex virus 2 glycoprotein B. J. Virol., April 1, 2006; 80(8): 3792 - 3800. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. S. B. Milne, A. V. Nicola, J. C. Whitbeck, R. J. Eisenberg, and G. H. Cohen Glycoprotein D Receptor-Dependent, Low-pH-Independent Endocytic Entry of Herpes Simplex Virus Type 1 J. Virol., June 1, 2005; 79(11): 6655 - 6663. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 K. Okazaki and H. Kida A synthetic peptide from a heptad repeat region of herpesvirus glycoprotein B inhibits virus replication J. Gen. Virol., August 1, 2004; 85(8): 2131 - 2137. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
I. Beitia Ortiz de Zarate, K. Kaelin, and F. Rozenberg Effects of Mutations in the Cytoplasmic Domain of Herpes Simplex Virus Type 1 Glycoprotein B on Intracellular Transport and Infectivity J. Virol., February 1, 2004; 78(3): 1540 - 1551. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. Harman, H. Browne, and T. Minson The Transmembrane Domain and Cytoplasmic Tail of Herpes Simplex Virus Type 1 Glycoprotein H Play a Role in Membrane Fusion J. Virol., October 2, 2002; 76(21): 10708 - 10716. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| INT J SYST EVOL MICROBIOL | MICROBIOLOGY | J GEN VIROL |
| J MED MICROBIOL | ALL SGM JOURNALS | |
