The envelope of intracellular African swine Fever virus is composed of a single lipid bilayer

Hawes, Philippa C., Netherton, Christopher L., Wileman, Thomas E. and Monaghan, Paul (2008) The envelope of intracellular African swine Fever virus is composed of a single lipid bilayer. Journal of Virology, 82 (16). pp. 7905-7912.

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Abstract

African swine fever virus (ASFV) is a member of a family of large nucleocytoplasmic DNA viruses that include poxviruses, iridoviruses, and phycodnaviruses. Previous ultrastructural studies of ASFV using chemical fixation and cryosectioning for electron microscopy (EM) have produced uncertainty over whether the inner viral envelope is composed of a single or double lipid bilayer. In this study we prepared ASFV-infected cells for EM using chemical fixation, cryosectioning, and high-pressure freezing. The appearance of the intracellular viral envelope was determined and compared to that of mitochondrial membranes in each sample. The best resolution of membrane structure was obtained with samples prepared by high-pressure freezing, and images suggested that the envelope of ASFV consisted of a single lipid membrane. It was less easy to interpret virus structure in chemically fixed or cryosectioned material, and in the latter case the virus envelope could be interpreted as having two membranes. Comparison of membrane widths in all three preparations indicated that the intracellular viral envelope of ASFV was not significantly different from the outer mitochondrial membrane (P < 0.05). The results support the hypothesis that the intracellular ASFV viral envelope is composed of a single lipid bilayer.

Item Type:	Article
Faculty \ School:	Faculty of Medicine and Health Sciences > Norwich Medical School
UEA Research Groups:	Faculty of Medicine and Health Sciences > Research Groups > Medicine (former - to 2013) Faculty of Medicine and Health Sciences > Research Groups > Gastroenterology and Gut Biology Faculty of Medicine and Health Sciences > Research Centres > Lifespan Health
Depositing User:	EPrints Services
Date Deposited:	25 Nov 2010 11:13
Last Modified:	19 Oct 2023 00:43
URI:	https://ueaeprints.uea.ac.uk/id/eprint/15101
DOI:	10.1128/JVI.00194-08

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