|
Eriocheir Sinensis Reovirus
''Cardoreovirus'' is a genus of double-stranded RNA viruses in the family ''Sedoreoviridae''. Crabs serve as natural hosts. The genus contains two species. Diseases associated with this genus include: trembling disease. The name derives from Latin words "''car''cinus" which means crab and "''do''eca" which means twelve in reference to the number genome segments. Structure Viruses in the genus ''Cardoreovirus'' are non-enveloped. They have an icosahedral In geometry, an icosahedron ( or ) is a polyhedron with 20 faces. The name comes . The plural can be either "icosahedra" () or "icosahedrons". There are infinitely many non- similar shapes of icosahedra, some of them being more symmetrical tha ... capsid that is three-layered. The inner shell has T=2 symmetry and the middle shell has T=13 symmetry. The diameter is around 55 nm. Genome The genome is made of double-stranded RNA. It is linear and has twelve segments. Life cycle Viral replication is cytoplasmic. Entry i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double-stranded RNA Viruses
Double-stranded RNA viruses (dsRNA viruses) are a polyphyletic group of viruses that have double-stranded genomes made of ribonucleic acid. The double-stranded genome is used as a template by the viral RNA dependent RNA polymerase (RdRp) to transcribe a positive-strand RNA functioning as messenger RNA (mRNA) for the host cell's ribosomes, which translate it into viral proteins. The positive-strand RNA can also be replicated by the RdRp to create a new double-stranded viral genome. A distinguishing feature of the dsRNA viruses is their ability to carry out transcription of the dsRNA segments within the capsid, and the required enzymes are part of the virion structure. Double-stranded RNA viruses are classified into two phyla, '' Duplornaviricota'' and '' Pisuviricota'' (specifically class '' Duplopiviricetes''), in the kingdom '' Orthornavirae'' and realm ''Riboviria''. The two phyla do not share a common dsRNA virus ancestor, but evolved their double strands two separat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sedoreoviridae
''Sedoreoviridae'' (''sedo'' = smooth) is a family of the ''Reovirales'' order of viruses. Viruses in this family are distinguished by the absence of a turreted protein on the inner capsid to produce a smooth surface. Taxonomy The family contains the following genera: * '' Cardoreovirus'' * '' Crabreovirus'' * '' Mimoreovirus'' * ''Orbivirus'' * ''Phytoreovirus'' * ''Rotavirus'' * '' Seadornavirus'' Characteristics Like other members of the ''Reovirales'' order, viruses of the ''Sedoreoviridae'' family are made of naked, icosahedral capsids containing 10-12 segments of linear double-stranded RNA (dsRNA). The Baltimore System of viral classification categorizes ''Reovirales'' in Group III. Importance Viruses classified in the ''Sedoreoviridae'' family infect a wide range of plants and animals, including some that can infect humans. There is not only the potential of a few of these viruses to cause human disease, but also to reduce the supply of crops and livestock. Viruses Gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Icosahedral Symmetry
In mathematics, and especially in geometry, an object has icosahedral symmetry if it has the same symmetries as a regular icosahedron. Examples of other polyhedra with icosahedral symmetry include the regular dodecahedron (the dual polyhedron, dual of the icosahedron) and the rhombic triacontahedron. Every polyhedron with icosahedral symmetry has 60 Rotational symmetry, rotational (or orientation-preserving) symmetries and 60 orientation-reversing symmetries (that combine a rotation and a Reflection symmetry, reflection), for a total symmetry order of 120. The full symmetry group is the Coxeter group of type . It may be represented by Coxeter notation and Coxeter diagram . The set of rotational symmetries forms a subgroup that is isomorphic to the alternating group on 5 letters. As point group Apart from the two infinite series of prismatic and antiprismatic symmetry, rotational icosahedral symmetry or chiral icosahedral symmetry of chiral objects and full icosahedra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reoviruses
''Sedoreoviridae'' (''sedo'' = smooth) is a family of the ''Reovirales'' order of viruses. Viruses in this family are distinguished by the absence of a turreted protein on the inner capsid to produce a smooth surface. Taxonomy The family contains the following genera: * '' Cardoreovirus'' * '' Crabreovirus'' * '' Mimoreovirus'' * '' Orbivirus'' * ''Phytoreovirus'' * ''Rotavirus'' * '' Seadornavirus'' Characteristics Like other members of the ''Reovirales'' order, viruses of the ''Sedoreoviridae'' family are made of naked, icosahedral capsids containing 10-12 segments of linear double-stranded RNA (dsRNA). The Baltimore System of viral classification categorizes ''Reovirales'' in Group III. Importance Viruses classified in the ''Sedoreoviridae'' family infect a wide range of plants and animals, including some that can infect humans. There is not only the potential of a few of these viruses to cause human disease, but also to reduce the supply of crops and livestock. Viruses Ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
