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They are viruses that represent a large family of small, positive-sense, single-stranded RNA viruses with a 30 nm icosahedral capsid. The viruses in this family can cause a range of diseases including the common cold, poliomyelitis, meningitis, hepatitis, and paralysis.
Herpesviridae. Herpesviridae is a large family of DNA viruses that cause infections and certain diseases in animals, including humans. [1] [2] [3] The members of this family are also known as herpesviruses. The family name is derived from the Greek word ἕρπειν ( herpein 'to creep'), referring to spreading cutaneous lesions, usually ...
Rubella virus, scientific name Rubivirus rubellae, is a member of the genus Rubivirus and belongs to the family of Matonaviridae, whose members commonly have a genome of single-stranded RNA of positive polarity which is enclosed by an icosahedral capsid . As of 1999 the molecular basis for the causation of congenital rubella syndrome was not ...
Poliovirus, the causative agent of polio (also known as poliomyelitis), is a serotype of the species Enterovirus C, in the family of Picornaviridae. [1] There are three poliovirus serotypes: types 1, 2, and 3. Poliovirus is composed of an RNA genome and a protein capsid.
Virus classification is the process of naming viruses and placing them into a taxonomic system similar to the classification systems used for cellular organisms . Viruses are classified by phenotypic characteristics, such as morphology, nucleic acid type, mode of replication, host organisms, and the type of disease they cause.
Capsid. Schematic of a cytomegalovirus. Illustration of geometric model changing between two possible capsids. A similar change of size has been observed as the result of a single amino-acid mutation [1] A capsid is the protein shell of a virus, enclosing its genetic material. It consists of several oligomeric (repeating) structural subunits ...
Rotavirus is a genus of double-stranded RNA viruses in the family Reoviridae. ... The RNA is surrounded by a three-layered icosahedral protein capsid.
Hepatitis B virus is a member of the Hepadnavirus family. The virus particle, called Dane particle , consists of an outer lipid envelope and an icosahedral nucleocapsid core composed of protein. The nucleocapsid encloses the viral DNA and a DNA polymerase that has reverse transcriptase activity similar to retroviruses.