There are currently 56 species in the family, divided among 26 genera and two subfamilies. Poxviruses parasitize invertebrates, birds, reptiles and mammals suggesting that the family poxviridae is an ancient virus family. Parvoviridae medical definition merriamwebster medical. The parvoviridae is a family of small, nonenveloped viruses that contain a singlestranded dna genome of approximately 5,000 bases. Members of this family infect a wide array of hosts and have been divided into two subfamilies, which infect either vertebrates the. What i really mean is they can affect the adults, kids and even the pets in the household. The latter infect invertebrates and will not be described in detail in this chapter. All structured data from the file and property namespaces is available under the creative commons cc0 license. Parvovirus definition is any of a family parvoviridae of singlestranded dna viruses that include the causative agents of fifth disease in humans, panleukopenia in cats, and parvovirus in dogs. A family of deoxyribonucleic acid dnacontaining animal viruses characterized by an icosahedral virion containing three or four structural proteins and a singlestranded dna genome. The rep orf encodes the nonstructural proteins ns, which are required for. Parvoviridae is a name for a viral family that encompasses small, nonenveloped, isometric dna viruses with linear, singlestranded genomes. Parvoviridae international committee on taxonomy of viruses. Test your knowledge of the parvoviridae virus family with this interactive quiz and printable worksheet.
Discovery of parvovirusrelated sequences in an unexpected broad. The ability of fungi to invade plant and animal tissue was observed in early 19th century but the first documented. Parvoviridae is a family of small icosahedral, nonenveloped animal viruses that contain a linear ssdna genome of approximately 5000 bases with short unique terminal palindromic sequences that fold back on themselves to form hairpin duplexes van regenmortel et al. Information and translations of parvoviridae in the most comprehensive dictionary definitions resource on the web. Parvoviridae is the sole taxon in the order quintoviricetes. Papovaviridae definition of papovaviridae by medical. Introduction to mycology the term mycology is derived from greek word mykes meaning mushroom. Parvoviridae international committee on taxonomy of. Aug 23, 2018 parvoviridae is a name for a viral family that encompasses small, nonenveloped, isometric dna viruses with linear, singlestranded genomes. General back to parvoviridae page natural hosts vertebrates, insects tropism human parvovirus b19. Nonenveloped, round, t1 icosahedral symmetry, 1826 nm in diameter.
Parvoviruses usually possess two major gene cassettes figure 2. Parvoviridae definition of parvoviridae by medical. Parvovirus definition of parvovirus by merriamwebster. Parvovirus b19 in pregnancy parvovirus is a member of the family parvoviridae. Summary parvovirus b19 b19v and human bocavirus 1 hbov1, members of the large parvoviridae family, are human pathogens responsible for a variety of diseases. The parvovirus genome consists of a singlestranded dna molecule. The family poxviridae is a large and diverse family of doublestranded dna viruses with ubiquitous distribution. The rep orf encodes the nonstructural proteins ns, which are required for transcription and dna replication, and the cp orf. Parvoviridae microbiology microbes bacteria information. A family of deoxyribonucleic acid containing animal viruses characterized by an icosahedral. Three genera in the subfamily parvovirinae are recognized.
None of the viral proteins are known to be glycosylated. That is, viruses infect specific cells or tissues of specific hosts, or specific bacteria, or specific plants. The viral definition used throughout these proposals is. Links to pubmed are also available for selected references. Our findings suggest that the hostranges of extant parvoviruses might span the entire animal kingdom. Files are available under licenses specified on their description page. Replication and assembly occur in the nucleus of infected cells. A taxonomic family within the kingdom virus one of the ssdna virus families, the parvovirus and related viruses. For b19v in particular, host features determine disease manifestations. People with weakened immune systems or existing respiratory or cardiac disease are more likely than others to get.
Currently the family is divided into three genera, two of which contain viruses of vertebrates and a third containing insect viruses. These viruses are prevalent worldwide and are culturable in vitro, and serological and molecular assays are available but require careful interpretation of. Canine parvovirus canine parvovirus is a devastating disease that affects puppies and young, typically unvaccinated, dogs. Parvoviridae is a name for a viral family that encompasses small, nonenveloped, isometric dna viruses. These viruses have no way of forcing an infected cell in replication, so they must infect cells that are regularly dividing in order to be productive. Pdf a set of proposals to rationalize and extend the taxonomy of the family parvoviridae is. Parvovirus replication and assembly occurs in the nucleus and is dependent upon host cellular functions. Surface images showing capsid topologies of viruses from selected genera in subfamilies parvovirinae and densovirinae. The hairpin structure at the 3 end is used as a selfprimer to start synthesis of a plussense dna, resulting in double strandeddna. Unlike other members of the family parvoviridae that have proteins with a pla2 domain, the pefudensoviruses have a pla2 motif that is located in the cterminal portion centred 6070 amino acid residues from the cterminus of the protein predicted to be translated from the small vp orf. Members of the family parvoviridae are ubiquitous, physically minute, and genetically compact viruses that contain a linear, singlestranded dna genome of. Adenoviruses are common viruses that cause a range of illness. Parrish introduction and history parvoviruses are small, nonenveloped viruses with a linear, singlestrand dna ssdna genome of about 5,000 bases. The family includes two subfamilies, chordopoxvirinae and entomopoxvirinae table 15.
The members of the family parvoviridae are among the smallest of the dna viruses, with a linear singlestranded genome of about 5 kilobases. Parvovirus, any virus belonging to the family parvoviridae. In order for an agent to be classified in the family parvoviridae, it must be judged to be an authentic parvovirus on the basis of having been isolated and sequenced or, failing this, on the basis of having been sequenced in tissues, secretions, or excretions of unambiguous host origin. Members of this family infect a wide array of animal hosts and have been divided into two subfamilies, which infect either vertebrates the parvovirinae or invertebrates densovirinae. The parvoviridae are a family of small, rugged, geneticallycompact dna viruses, known collectively as parvoviruses. The genome is replicated through rollinghairpin mechanism. The ability of fungi to invade plant and animal tissue was observed in early 19th century but the first documented animal infection by any fungus was made by bassi, who in 1835 studied the muscardine disease of silkworm and. Canine parvovirus is a member of the parvoviridae family of viruses. Virions are 1826 nm in diameter, are not enveloped, and are ether resistant. A family of deoxyribonucleic acid containing animal viruses characterized by an icosahedral virion containing three or four structural proteins and a. Parvoviridae article about parvoviridae by the free.
This page was last edited on 26 december 2019, at 15. The poxviridae family contains 38 viruses that together infect a wide range of hosts, including mammals, birds, reptiles, and insects. Parvoviridae, which are classified into two subfamilies parvovirinae and densovirinae, can infect both vertebrate and insects and are related to a wide range of diseases in insects, animals, and. Entomopoxvirinae members infect invertebrates entomo indicates an insect, such as in entomology, the study of insects, while the chordopoxvirinae subfamily is composed of. Department of pharmacy and biotechnology, university of bologna, bologna, italy interests.
Feb 05, 2012 parvovirus b19 in pregnancy parvovirus is a member of the family parvoviridae. There are currently 75 species in the family, divided among genera and two subfamilies. The genomes are linear and encode a large complement of genes. Aug 23, 2018 the parvoviridae is a family of small, nonenveloped viruses that contain a singlestranded dna genome of approximately 5,000 bases. Full text is available as a scanned copy of the original print version. Parvoviruses are among the smallest, simplest eukaryotic viruses and were only discovered in the 1960s while human parvovirus infections were only recognised in the 1980s. A familia parvoviridae abrange os menores virus conhecidos e alguns dos mais resistentes ao ambiente. Parvoviridae parvoviridae ssdna viruses international. They can cause coldlike symptoms, fever, sore throat, bronchitis, pneumonia, diarrhea, and pink eye conjunctivitis.
They can be defined by their size, hence the name which comes from the latin word for small i. Parvovirus b19 in pregnancy epidemiology congenital infection rates vary depending on the prevalence in the community. Parvoviruses have small nonenveloped virions virus particles, and the icosahedral capsid the protein shell surrounding the viral nucleic acids is made up of 32 capsomeres capsid subunits measuring 1826 nm 1 nm 10. Certain virus families are fun for the whole family. Parvoviridae definition of parvoviridae by medical dictionary. Pdf novel parvovirus sublineage in the family of parvoviridae. Phylogenetic tree showing genera in the family parvoviridae. Parvovirus b19, erythrovirus, viral infection, aplastic anaemia, fulminant hepatic failure, arthritis. For viruses from the subfamily densovirinae, viral names have typically been assembled from binomial host names plus the word densovirus.
Parvoviridae article about parvoviridae by the free dictionary. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Viruses in this family infect a wide range of hosts, as reflected by the longstanding division into two subfamilies. Get a printable copy pdf file of the complete article 3.
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