Crossref journal-article
American Society for Microbiology
Journal of Virology (235)
Abstract

ABSTRACT The Us9 gene is conserved among most alphaherpesviruses. In pseudorabies virus (PRV), the Us9 protein is a 98-amino-acid, type II membrane protein found in the virion envelope. It localizes to the trans -Golgi network (TGN) region in infected and transfected cells and is maintained in this compartment by endocytosis from the plasma membrane. Viruses with Us9 deleted have no observable defects in tissue culture yet have reduced virulence and restricted spread to retinorecipient neurons in the rodent brain. In this report, we demonstrate that Us9-promoted transneuronal spread in vivo is dependent on a conserved acidic motif previously shown to be essential for the maintenance of Us9 in the TGN region and recycling from the plasma membrane. Mutant viruses with the acidic motif deleted have an anterograde spread defect indistinguishable from that of Us9 null viruses. Transneuronal spread, however, is not dependent on a dileucine endocytosis motif in the Us9 cytoplasmic tail. Through alanine scanning mutagenesis of the acidic motif, we have identified two conserved tyrosine residues that are essential for Us9-mediated spread as well as two serine residues, comprising putative consensus casein kinase II sites, that modulate the rate of PRV transneuronal spread in vivo.

Bibliography

Brideau, A. D., Eldridge, M. G., & Enquist, L. W. (2000). Directional Transneuronal Infection by Pseudorabies Virus Is Dependent on an Acidic Internalization Motif in the Us9 Cytoplasmic Tail. Journal of Virology, 74(10), 4549–4561.

Authors 3
  1. Amy D. Brideau (first)
  2. Marlies G. Eldridge (additional)
  3. Lynn W. Enquist (additional)
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Dates
Type When
Created 23 years, 1 month ago (July 27, 2002, 6:06 a.m.)
Deposited 3 years, 5 months ago (March 4, 2022, 11:02 p.m.)
Indexed 1 year, 1 month ago (July 17, 2024, 3:08 a.m.)
Issued 25 years, 3 months ago (May 15, 2000)
Published 25 years, 3 months ago (May 15, 2000)
Published Print 25 years, 3 months ago (May 15, 2000)
Funders 0

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@article{Brideau_2000, title={Directional Transneuronal Infection by Pseudorabies Virus Is Dependent on an Acidic Internalization Motif in the Us9 Cytoplasmic Tail}, volume={74}, ISSN={1098-5514}, url={http://dx.doi.org/10.1128/jvi.74.10.4549-4561.2000}, DOI={10.1128/jvi.74.10.4549-4561.2000}, number={10}, journal={Journal of Virology}, publisher={American Society for Microbiology}, author={Brideau, Amy D. and Eldridge, Marlies G. and Enquist, Lynn W.}, year={2000}, month=may, pages={4549–4561} }