Book contents
- Frontmatter
- Contents
- List of contributors
- Preface
- Part I Introduction: definition and classification of the human herpesviruses
- Part II Basic virology and viral gene effects on host cell functions: alphaherpesviruses
- 5 Genetic comparison of human alphaherpesvirus genomes
- 6 Alphaherpes viral genes and their functions
- 7 Entry of alphaherpesviruses into the cell
- 8 Early events pre-initiation of alphaherpes viral gene expression
- 9 Initiation of transcription and RNA synthesis, processing and transport in HSV and VZV infected cells
- 10 Alphaherpesvirus DNA replication
- 11 Envelopment of HSV nucleocapsids at the inner nuclear membrane
- 12 The egress of alphaherpesviruses from the cell
- 13 The strategy of herpes simplex virus replication and takeover of the host cell
- Part II Basic virology and viral gene effects on host cell functions: betaherpesviruses
- Part II Basic virology and viral gene effects on host cell functions: gammaherpesviruses
- Part III Pathogenesis, clinical disease, host response, and epidemiology: HSV-1 and HSV-2
- Part III Pathogenesis, clinical disease, host response, and epidemiology: VZU
- Part III Pathogenesis, clinical disease, host response, and epidemiology: HCMV
- Part III Pathogenesis, clinical disease, host response, and epidemiology: HHV- 6A, 6B, and 7
- Part III Pathogenesis, clinical disease, host response, and epidemiology: gammaherpesviruses
- Part IV Non-human primate herpesviruses
- Part V Subversion of adaptive immunity
- Part VI Antiviral therapy
- Part VII Vaccines and immunothgerapy
- Part VIII Herpes as therapeutic agents
- Index
- Plate section
- References
7 - Entry of alphaherpesviruses into the cell
from Part II - Basic virology and viral gene effects on host cell functions: alphaherpesviruses
Published online by Cambridge University Press: 24 December 2009
- Frontmatter
- Contents
- List of contributors
- Preface
- Part I Introduction: definition and classification of the human herpesviruses
- Part II Basic virology and viral gene effects on host cell functions: alphaherpesviruses
- 5 Genetic comparison of human alphaherpesvirus genomes
- 6 Alphaherpes viral genes and their functions
- 7 Entry of alphaherpesviruses into the cell
- 8 Early events pre-initiation of alphaherpes viral gene expression
- 9 Initiation of transcription and RNA synthesis, processing and transport in HSV and VZV infected cells
- 10 Alphaherpesvirus DNA replication
- 11 Envelopment of HSV nucleocapsids at the inner nuclear membrane
- 12 The egress of alphaherpesviruses from the cell
- 13 The strategy of herpes simplex virus replication and takeover of the host cell
- Part II Basic virology and viral gene effects on host cell functions: betaherpesviruses
- Part II Basic virology and viral gene effects on host cell functions: gammaherpesviruses
- Part III Pathogenesis, clinical disease, host response, and epidemiology: HSV-1 and HSV-2
- Part III Pathogenesis, clinical disease, host response, and epidemiology: VZU
- Part III Pathogenesis, clinical disease, host response, and epidemiology: HCMV
- Part III Pathogenesis, clinical disease, host response, and epidemiology: HHV- 6A, 6B, and 7
- Part III Pathogenesis, clinical disease, host response, and epidemiology: gammaherpesviruses
- Part IV Non-human primate herpesviruses
- Part V Subversion of adaptive immunity
- Part VI Antiviral therapy
- Part VII Vaccines and immunothgerapy
- Part VIII Herpes as therapeutic agents
- Index
- Plate section
- References
Summary
Introduction
Herpes simplex virus (HSV) represents the most comprehensive example of virus-receptor interaction in the Herpesviridae family, and the prototype virus encoding multipartite entry genes. Whereas small enveloped viruses package the functions required for entry and fusion into one or two fusion glycoproteins, in HSV the same functions are distributed over several distinct glycoproteins, each with a specialized activity. In addition, HSV encodes a highly sophisticated system for promoting and blocking fusion between the viral envelope and cell membrane. Because the most obvious models of virus entry into the cell do not fit with the HSV complexity, and despite our detailed knowledge of the HSV receptors and of the crystal structure of glycoprotein D (gD), the receptor-binding glycoprotein, and of gB, HSV entry is still, in part, a puzzle (WuDunn and Spear, 1989; Cocchi et al., 1998b; Geraghty et al., 1998; Carfi et al., 2001).
The current model of HSV entry envisions that, first, the virus attaches to cell membranes by the interaction of gC, and possibly gB, to glycosaminoglycans (GAGs) (Herold et al., 1991). This binding likely creates multiple points of adhesion, is reversible, and the detached virus maintains its infectivity, indicating that fusion has yet to take place. Penetration requires gD, whose ectodomain contains two physically separate and functionally distinct regions, i.e., the region made of the N-terminus that carries the receptor-binding sites, and the C-terminus that carries the profusion domain (Ligas and Johnson, 1988; Cocchi et al., 2004).
- Type
- Chapter
- Information
- Human HerpesvirusesBiology, Therapy, and Immunoprophylaxis, pp. 93 - 111Publisher: Cambridge University PressPrint publication year: 2007
References
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