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Identification of a single amino acid residue which is critical for the interaction between HSV-1 inner tegument proteins pUL36 and pUL37


Kelly, B J; Mijatov, Branka; Fraefel, C; Cunningham, A L; Diefenbach, R J (2011). Identification of a single amino acid residue which is critical for the interaction between HSV-1 inner tegument proteins pUL36 and pUL37. Virology:1-9.

Abstract

The herpes simplex virus type 1 (HSV-1) structural tegument proteins pUL36 and pUL37 are essential for
secondary envelopment during the egress of viral particles. For this study, scanning alanine mutagenesis
of HSV-1 pUL37, in combination with yeast two-hybrid, identified pUL37 residue D631 as a major determinant
for binding of pUL36. Further analysis of the binding of this pUL37 mutant to pUL36 by coimmunoprecipitation
assay confirmed the role of pUL37 D631 in mediating binding of pUL36. A trans-complementation
assay using pUL37 deletion virus FRΔUL37 was then carried out, where pUL37 wild type or D631A were provided
in trans. For pUL37 D631A, a significant reduction in virus titer was observed compared to that seen
when pUL37 wild type was present. The results presented here underline the crucial role of the pUL36/pUL37
interaction in replication of HSV-1 and indicate a critical role for pUL37 D631 in mediating this interaction.

The herpes simplex virus type 1 (HSV-1) structural tegument proteins pUL36 and pUL37 are essential for
secondary envelopment during the egress of viral particles. For this study, scanning alanine mutagenesis
of HSV-1 pUL37, in combination with yeast two-hybrid, identified pUL37 residue D631 as a major determinant
for binding of pUL36. Further analysis of the binding of this pUL37 mutant to pUL36 by coimmunoprecipitation
assay confirmed the role of pUL37 D631 in mediating binding of pUL36. A trans-complementation
assay using pUL37 deletion virus FRΔUL37 was then carried out, where pUL37 wild type or D631A were provided
in trans. For pUL37 D631A, a significant reduction in virus titer was observed compared to that seen
when pUL37 wild type was present. The results presented here underline the crucial role of the pUL36/pUL37
interaction in replication of HSV-1 and indicate a critical role for pUL37 D631 in mediating this interaction.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:05 Vetsuisse Faculty > Institute of Virology
Dewey Decimal Classification:570 Life sciences; biology
Language:English
Date:November 2011
Deposited On:27 Dec 2011 14:38
Last Modified:05 Apr 2016 15:15
Publisher:Elsevier
ISSN:0042-6822
Publisher DOI:https://doi.org/10.1016/j.virol.2011.11.002
PubMed ID:22112849
Permanent URL: https://doi.org/10.5167/uzh-53050

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