Characterization of the Chicken PKR : Polymorphism of the gene and Antiviral Activity against Vesicular Stomatitis Virus

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Author(s)

    • KO J. H.
    • Laboratory of Experimental Animal Science, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University
    • Asano Atsushi
    • Laboratory of Experimental Animal Science, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University
    • Kon Yasuhiro
    • Laboratory of Anatomy, Department of Biomedical Sciences, Graduate School of Veterinary Medicine, Hokkaido University
    • Watanabe Tomomasa
    • Animal Breeding and Reproduction, Graduate School of Agriculture, Hokkaido University
    • Agui Takashi
    • Laboratory of Experimental Animal Science, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University

Abstract

The double-stranded RNA-dependent protein kinase (PKR) is induced in mouse and human cells on treatment with interferon. In this study, we have cloned and determined the nucleotide sequences of chicken PKR cDNA in various chicken breeds. Chicken PKR was a 550-amino-acid protein as deduced from the cDNA open reading frame (ORF), and there were specific domains (two double-stranded RNA binding domains (DRBDs) and numerous kinase subdomains) characterized in RNA binding proteins and kinase families. Furthermore, it was suggested that chicken PKR was polymorphic. Transfected cell clones expressing chicken PKR mRNA were demonstrated to confer antiviral responses to vesicular stomatitis virus, except for Koshamo type-3 (KS-3 ). KS-3 PKR, which has an amino acid substitution at position 507 (Arg to Gin), showed amphibious antiviral responses. This specific amino acid substitution was considered to determine the antiviral function of chicken PKR in addition to essential domains as DRBDs and kinase subdomains.

Journal

  • Japanese Journal of Veterinary Research

    Japanese Journal of Veterinary Research 51(3-4), 123-133, 2004-02

    The Graduate School of Veterinary Medicine, Hokkaido University

Cited by:  1

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