• ICTV
  • In the second ICTV report in 1976 this genus was elevated to family level - the Herpetoviridae. (wikipedia.org)
  • The trees from our analyses are in good agreement to the latest classification of large dsDNA viruses and parvoviruses by the International Committee on Taxonomy of Viruses (ICTV). (biomedcentral.com)
  • The International Committee on the Taxonomy of Viruses (ICTV) publishes a report on the virus taxonomy system every five years. (biomedcentral.com)
  • According to the VIIIth Report of the International Committee on Taxonomy of Viruses (ICTV) [ 20 ], the dsDNA viruses can be classified into certain families or unassigned genus. (biomedcentral.com)
  • Since 1971, the International Committee on Taxonomy of Viruses (ICTV) operating on behalf of the world community of virologists has taken on the task of developing a single, universal taxonomic scheme for all viruses infecting animals (vertebrate, invertebrates, and protozoa), plants (higher plants and algae), fungi, bacteria, and archaea. (indigo.ca)
  • dsDNA viruses
  • The Herpesvirales is an order of dsDNA viruses with eukaryotic hosts and enveloped virions, characterized by a common morphology. (wikipedia.org)
  • In this paper, the DL method is used to analyze the whole-proteome phylogeny of 124 large dsDNA viruses and 30 parvoviruses, two data sets with large difference in genome size. (biomedcentral.com)
  • The present method provides a new way for recovering the phylogeny of large dsDNA viruses and parvoviruses, and also some insights on the affiliation of a number of unclassified viruses. (biomedcentral.com)
  • In comparison, some alignment-free methods such as the CV Tree method can be used for recovering the phylogeny of large dsDNA viruses, but they are not suitable for resolving the phylogeny of parvoviruses with a much smaller genome size. (biomedcentral.com)
  • The present study represents another effort of applying an alignment-free method in analysing complete genome data to elucidate the phylogeny of two virus groups of different genome size, the large dsDNA viruses and parvoviruses. (biomedcentral.com)
  • The genome sizes of dsDNA viruses are usually larger than 10 kb except those in the families Polyomaviridae (5 kb) and Papillomaviridae (7-8 kb). (biomedcentral.com)
  • These are the only known dsDNA viruses that infect plants. (wikipedia.org)
  • Proboscivirus
  • The EEHVs are members of the Proboscivirus genus, a novel clade most closely related to the mammalian betaherpesviruses that have been responsible for as many as 70 deaths of both zoo and wild Asian elephants worldwide, especially in young calves. (wikipedia.org)
  • genome
  • On infecting the B-lymphocyte, the linear virus genome circularizes and the virus subsequently persists within the cell as an episome. (wikidoc.org)
  • The EBNA-1 protein is essential for maintenance of the virus genome . (wikidoc.org)
  • Due to the problems caused by the uncertainty in alignment, existing tools for phylogenetic analysis based on multiple alignment could not be directly applied to the whole-genome comparison and phylogenomic studies of viruses. (biomedcentral.com)
  • On the other hand, the genome sizes of ssDNA viruses are smaller than 10 kb. (biomedcentral.com)
  • Bacteriophages (viruses infecting bacteria) belonging to the families Tectiviridae and Corticoviridae have a lipid bilayer membrane inside the icosahedral protein capsid and the membrane surrounds the genome. (wikipedia.org)
  • Viruses that establish lifelong latent infections must ensure that the viral genome is maintained within the latently infected cell throughout the life of the host, yet at the same time must also be capable of avoiding elimination by the immune surveillance system especially must avoid being detected by host CD8+ cytotoxic T lymphocytes (CTLs). (wikipedia.org)
  • Icosahedral, non-enveloped virus containing double stranded linear DNA genome. (slideplayer.com)
  • We show for the first time that a virus induces widespread antisense transcription of the host cell genome. (biomedcentral.com)
  • While antisense transcription from viral genomes has been described previously, e.g., in HIV-1 [ 17 ], and was also observed in our sequencing data from the HSV-1 genome, to our knowledge, modulation of host cell antisense transcription by virus infections has not been studied so far. (biomedcentral.com)
  • Diseases
  • Reactivation of latent viruses has been implicated in a number of diseases (e.g. (wikipedia.org)
  • Notable diseases like smallpox, herpes, and the chickenpox are caused by such DNA viruses. (wikipedia.org)
  • Gammaherpesviruses are of primary interest due to the two human viruses, EBV and KSHV and the diseases they cause.The gammaherpesviruses replicate and persist in lymphoid cells but some are capable of undergoing lytic replication in epithelial or fibroblast cells. (wikipedia.org)
  • lymphocytes
  • Given the initial absence of host immunity , the lytic cycle produces large amounts of virus to infect other (presumably) B-lymphocytes within the host. (wikidoc.org)
  • The latent programs reprogram and subvert infected B-lymphocytes to proliferate and bring infected cells to the sites at which the virus presumably persists. (wikidoc.org)
  • strains
  • Artificial insemination is not believed to be a transmission factor, notes that when multiple calves of a single bull or cow elephant died at different times (even at the same facility) they nearly all had distinct strains of the virus, yet when two calves died or became infected at the same time at the same facility the pairs have always had identical virus strains. (wikipedia.org)
  • Contains live attenuated measles, mumps and rubella virus strains. (slideplayer.com)
  • latent
  • The virus can execute many distinct programs of gene expression which can be broadly categorized as being lytic cycle or latent cycle. (wikidoc.org)
  • More than 90% of adults have been infected with at least one of these, and a latent form of the virus remains in most people. (wikipedia.org)
  • The virus can remain latent in recovered animals - shedding at times of stress, allowing the spread of disease to others. (wikipedia.org)
  • Due to reactivation of latent measles virus in the brain. (slideplayer.com)
  • Virus was isolated from tonsils/adenoids surgically removed, indicating latent infections. (slideplayer.com)
  • humans
  • These findings suggest that an additional human tumor virus related to KSHV may be found in humans. (wikipedia.org)
  • These viruses tend to cause tumors when infection occurs outside of their native hosts or in the case of KSHV, in humans when the host is immunosuppressed due to AIDS, old age, or in the setting of organ transplantation. (wikipedia.org)
  • The Epstein-Barr virus (EBV) or Human herpes virus 4 (HHV-4) is one of the most common viruses in humans (more than 70% seropositivity). (slideplayer.com)
  • Genes
  • Eventually, when host immunity develops, the virus persists by turning off most (or possibly all) of its genes, only occasionally reactivating to produce fresh virions. (wikidoc.org)
  • Virus Genes. (wikipedia.org)
  • They are large double-stranded viruses that possess up to 100 genes in a single long chromosome, which is flanked by repetitive DNA sequences called terminal repeats. (wikipedia.org)
  • infects
  • Distribution is worldwide and the virus infects a range of ruminants, including bison, buffalo, sheep and goats. (wikipedia.org)
  • The virus then spreads by blood and infects the endothelial cells of the blood vessels. (slideplayer.com)
  • pathogens
  • This ancient system, established about 1000 million years ago ( Nonaka and Kimura, 2006 ), has the ability to recognize and eliminate varied invading pathogens including viruses. (frontiersin.org)
  • infections
  • In benign infections found in some wild and captive African elephants, these viruses can affect either the skin or the pulmonary system. (wikipedia.org)
  • human
  • It is 35 to 45% homologous to the human Epstein-Barr virus. (wikipedia.org)
  • During maturation of HHV-6 virions, human cell membranes are used to form viral lipid envelopes (as is characteristic of all enveloped viruses). (wikipedia.org)
  • Thus HR1, HR2, HR3 for human retroviruses 1, 2 and 3 is appropriate and does not prejudice the likelihood that HR1 and HR2 will end up in one genus of one subfamily whereas HR3 may end up in a different subfamily and genus. (nih.gov)
  • Oral lesions associated with human immunodeficiency virus in 75 adult patients: a clinical study. (pubfacts.com)
  • The objective of this study was to investigate the presence of oral lesions in human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS) patients in a descriptive cross-sectional study, and to establish their presence according to levels of CD4+ cells (including the CD4+/CD8+ cell ratio). (pubfacts.com)
  • Virus isolation by culture on human fibroblasts and founding the CPE (rounding, clustering and swelling) PCR for DNA detection Antibody detection by CF, NT and HI tests. (slideplayer.com)
  • Herpes simplex virus type 1 (HSV-1) is a human pathogen, together with seven other viruses from the alpha, beta, and gammaherpesvirinae. (biomedcentral.com)
  • establish
  • It is postulated that following natural infection with EBV, the virus executes some or all of its repertoire of gene expression programs to establish a persistent infection. (wikidoc.org)