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Chrysoviridae Virion Modified
''Chrysoviridae'' is a family of double-stranded RNA viruses. Members of the family are called chrysoviruses. Virology The capsid is about 35-40 nm in diameter. The genome In the fields of molecular biology and genetics, a genome is all the genetic information of an organism. It consists of nucleotide sequences of DNA (or RNA in RNA viruses). The nuclear genome includes protein-coding genes and non-coding ge ... has four segments (tetrapartit). These segments are separately encapsulated.SIBChrysoviridae at: Expasy ViralZone Taxonomy The following genera are recognized: * '' Alphachrysovirus'' * '' Betachrysovirus'' References External links ICTV Report: ''Chrysoviridae'' Virus families Riboviria {{virus-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryo-EM
Cryogenic electron microscopy (cryo-EM) is a cryomicroscopy technique applied on samples cooled to cryogenic temperatures. For biological specimens, the structure is preserved by embedding in an environment of vitreous ice. An aqueous sample solution is applied to a grid-mesh and plunge-frozen in liquid ethane or a mixture of liquid ethane and propane. While development of the technique began in the 1970s, recent advances in detector technology and software algorithms have allowed for the determination of biomolecular structures at near-atomic resolution. This has attracted wide attention to the approach as an alternative to X-ray crystallography or NMR spectroscopy for macromolecular structure determination without the need for crystallization. In 2017, the Nobel Prize in Chemistry was awarded to Jacques Dubochet, Joachim Frank, and Richard Henderson "for developing cryo-electron microscopy for the high-resolution structure determination of biomolecules in solution." ''Nature ... [...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 to transcribe a positive-strand RNA by the viral RNA-dependent RNA polymerase (RdRp). The positive-strand RNA may be used as messenger RNA (mRNA) which can be translated into viral proteins by the host cell's ribosomes. The positive-strand RNA can also be replicated by the RdRp to create a new double-stranded viral genome. Double-stranded RNA viruses are classified in two separate phyla '' Duplornaviricota'' and '' Pisuviricota'' (specifically class '' Duplopiviricetes''), which are in the kingdom '' Orthornavirae'' and realm ''Riboviria''. The two groups do not share a common dsRNA virus ancestor. Double-stranded RNA viruses evolved two separate times from positive-strand RNA viruses. In the Baltimore classification system, dsRNA viruses belong to Group III. Virus group members vary widely in host ran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chrysoviridae Virion Modified
''Chrysoviridae'' is a family of double-stranded RNA viruses. Members of the family are called chrysoviruses. Virology The capsid is about 35-40 nm in diameter. The genome In the fields of molecular biology and genetics, a genome is all the genetic information of an organism. It consists of nucleotide sequences of DNA (or RNA in RNA viruses). The nuclear genome includes protein-coding genes and non-coding ge ... has four segments (tetrapartit). These segments are separately encapsulated.SIBChrysoviridae at: Expasy ViralZone Taxonomy The following genera are recognized: * '' Alphachrysovirus'' * '' Betachrysovirus'' References External links ICTV Report: ''Chrysoviridae'' Virus families Riboviria {{virus-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genome
In the fields of molecular biology and genetics, a genome is all the genetic information of an organism. It consists of nucleotide sequences of DNA (or RNA in RNA viruses). The nuclear genome includes protein-coding genes and non-coding genes, other functional regions of the genome such as regulatory sequences (see non-coding DNA), and often a substantial fraction of 'junk' DNA with no evident function. Almost all eukaryotes have mitochondria and a small mitochondrial genome. Algae and plants also contain chloroplasts with a chloroplast genome. The study of the genome is called genomics. The genomes of many organisms have been sequenced and various regions have been annotated. The International Human Genome Project reported the sequence of the genome for ''Homo sapiens'' in 200The Human Genome Project although the initial "finished" sequence was missing 8% of the genome consisting mostly of repetitive sequences. With advancements in technology that could handle seq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alphachrysovirus
''Alphachrysovirus'' is a genus of double-stranded RNA viruses. It is one of two genera in the family ''Chrysoviridae''. They infect fungi, in particular ''Penicillium''. Their name is derived from the Greek word ''chrysos'' which means yellow-green. There are 20 species in this genus. Structure Viruses in the genus ''Alphachrysovirus'' are non-enveloped, with icosahedral geometries, and T=1, T=2 symmetry. The diameter is around 35–40 nm. Genome Genomes are linear double-stranded RNA which is around 12.5 kbp in length. The genome codes for four proteins. The genome has three double stranded RNA segments. All have extended highly conserved terminal sequences at both ends. Life cycle Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the double-stranded RNA virus replication model. Double-stranded RNA virus transcription is the method of transcription. The virus exits the host cell by cell to cel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chrysoviridae
''Chrysoviridae'' is a family of double-stranded RNA viruses. Members of the family are called chrysoviruses. Virology The capsid is about 35-40 nm in diameter. The genome has four segments (tetrapartit). These segments are separately encapsulated.SIBChrysoviridae at: Expasy ViralZone Taxonomy The following genera are recognized: * ''Alphachrysovirus ''Alphachrysovirus'' is a genus of double-stranded RNA viruses. It is one of two genera in the family ''Chrysoviridae''. They infect fungi, in particular ''Penicillium''. Their name is derived from the Greek word ''chrysos'' which means yellow-g ...'' * '' Betachrysovirus'' References External links ICTV Report: ''Chrysoviridae'' Virus families Riboviria {{virus-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virus Families
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Since Dmitri Ivanovsky's 1892 article describing a non-bacterial pathogen infecting tobacco plants and the discovery of the tobacco mosaic virus by Martinus Beijerinck in 1898,Dimmock p. 4 more than 9,000 virus species have been described in detail of the millions of types of viruses in the environment. Viruses are found in almost every ecosystem on Earth and are the most numerous type of biological entity. The study of viruses is known as virology, a subspeciality of microbiology. When infected, a host cell is often forced to rapidly produce thousands of copies of the original virus. When not inside an infected cell or in the process of infecting a cell, viruses exist in the form of independent particles, or ''virions'', consisting of (i) the genetic material, i. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
