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A capsid is the protein shell of a virus, enclosing its genetic material. It consists of several oligomeric (repeating) ...
All members of the order have a virion structure that consists of a DNA core surrounded by an icosahedral capsid composed of 12 pentavalent and 150 hexavalent capsomeres (T = 16). The capsid has a diameter of ~110 nanometers (nm) and is embedded in a proteinaceous matrix called the tegument , which in its turn is enclosed by a glycoprotein ...
Morphology. The virus particle, ... The capsid contains an internal lipid membrane between the capsid and the genome, which is in the center of the virion.
The three serotypes of poliovirus, PV-1, PV-2, and PV-3, each have a slightly different capsid protein. Capsid proteins define cellular receptor specificity and virus antigenicity. PV-1 is the most common form encountered in nature, but all three forms are extremely infectious. [35]
The capsid proteins are often differentiated into major and minor capsid proteins (MCP and mCP). In exceptional cases, there are also viruses without a capsid (i.e., true virions), such as the RNA viruses of the Narnaviridae and the viroids of the Pospiviroidae (with the Citrus Exocortis Viroid and the Citrus Bark Crack Viroid).
Its genome is about 15,000 nucleotides in length and contains seven genes that encode nine proteins. The genome is encased by a capsid that is in turn surrounded by a viral envelope. MuV particles, called virions, are pleomorphic in shape and vary in size from 100 to 600 nanometers in diameter.
Viruses are classified by phenotypic characteristics, such as morphology, nucleic acid type, mode of replication, ... Capsid symmetry Nucleic acid type Group 1.
Linear layout of lambda phage genome with major operons, promoter regions and capsid coding genes. [5] The genome contains 48,502 [7] base pairs of double-stranded, linear DNA, with 12-base single-strand segments at both 5' ends. [8] These two single-stranded segments are the "sticky ends" of what is called the cos site.