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[Structure and assembly of human beta herpesviruses]
Nihon Rinsho. Japanese Journal of Clinical Medicine
|February 18, 1998
Summary
This review details the structure and assembly of human cytomegalovirus (HCMV), human herpesvirus 6 (HHV6), and human herpesvirus 7 (HHV7). Key findings highlight cytoplasmic capsid tegument acquisition and distinct protein localizations in HCMV.
Area of Science:
- Virology
- Cell Biology
- Structural Biology
Context:
- Human cytomegalovirus (HCMV), human herpesvirus 6 (HHV6), and human herpesvirus 7 (HHV7) are significant human pathogens.
- Understanding their structure and assembly is crucial for developing antiviral strategies.
- Previous research has focused on individual viral components, but a comparative ultrastructural analysis is needed.
Purpose:
- To review and synthesize current knowledge on the structure and assembly of HCMV, HHV6, and HHV7.
- To elucidate the common and distinct features of tegument acquisition and composition in these betaherpesviruses.
- To discuss the molecular mechanisms underlying viral assembly.
Summary:
- Common ultrastructural feature: intracytoplasmic capsids with a distinct tegumentary coating.
- Tegument acquisition occurs in the cytoplasm for HHV6 and HHV7 virions.
- HCMV studies reveal tegument protein pp150 on intranuclear and cytoplasmic capsids, and pp65 in dense bodies but not virions.
Impact:
- Provides a comprehensive overview of betaherpesvirus assembly.
- Highlights the role of the tegument in viral structure and infection.
- Informs future research on antiviral drug targets and vaccine development.