1887

Abstract

Herpes simplex virus (HSV) particles contain a factor which can shut off host protein synthesis during the earliest stages of infection. The efficiency of shutoff varies between different strains of virus, type 2 strains being generally more active than type 1 strains. However, HSV-2 strain HG52 is deficient in host cell shutoff. We have investigated the basis of the different shutoff phenotypes of a strong shutoff strain (HSV-2 strain G), a weak shutoff virus (HSV-1 strain 17 syn) and HG52 by comparative DNA sequence analysis of gene UL41, which encodes the virion-associated host shutoff factor. The results show that the UL41 genes of strains G and 17 are 86 % homologous and that the lack of shutoff by HG52 is likely to be explained by a frameshift mutation within its UL41 coding sequence.

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/content/journal/jgv/10.1099/0022-1317-71-6-1387
1990-06-01
2022-08-16
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