Acta Virologica Vol.56, No.3, p.177-186, 2012
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Title: Partial genome analysis of murine gammaherpesvirus 4556 |
Author: M. Kúdelová, Z. Halásová, P. Belvončíková, P. Pančík, I. Režuchová, M. Valovičová |
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Abstract: Murine gammaherpesvirus 68 (MHV-68) -infected mouse is an animal model of gammaherpesvirus infection in man and domestic animals. Murine gammaherpesvirus 4556 (MHV-4556), isolated from Apodemus flavicollis ticks has been considered a close relative of MHV-68 but different in some features of infection in vitro and in vivo. Previous comparison of MHV-4556 with MHV-68 has revealed their diversity in immune evasion protein MK3. In this study, HindIII and EcoRI restriction profiles of the MHV-4556 genome disclosed absence of the deletion that has been identified previously at the left end of genomes of murine gammaherpesvirus 76 (MHV-76) and murine gammaherpesvirus Šumava (MHV-Šumava). A 22, 565 bp portion of MHV-4556 genome sequence was sequenced, analyzed and compared with that of MHV-68. Nucleotide sequences of 21 genes of MHV-4556 and deduced amino acid sequences revealed their identity to those of MHV-68 except for differences in 15 nucleotides and 8 amino acids in 5 genes and their proteins, respectively. Due to these differences, immune evasion protein M4 and structural proteins encoded by ORF8 (gB), ORF11 (p43), ORF26 and ORF52, respectively, are predicted to have a reduced hydrophilicity and surface exposure compard with their MHV-68 counterparts. These differences obviously contribute to some different pathogenetical features of these viruses and could explain the weaker immunogenicity of MHV-4556 in comparison with MHV-68.
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Keywords: murine gammaherpesvirus 4556; restriction analysis; partial genome sequence |
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Year: 2012, Volume: 56, Issue: 3 |
Page From: 177, Page To: 186 |
doi:10.4149/av_2012_03_177
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