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Baltimore classification groups viruses together based on their manner of mRNA synthesis. Characteristics directly related to this include whether the genome is made of deoxyribonucleic acid (DNA) or ribonucleic acid (RNA), the strandedness of the genome, which can be either single- or double-stranded, and the sense of a single-stranded genome, which is either positive or negative.
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.
David Baltimore (born March 7, 1938) is an American biologist, university administrator, and 1975 Nobel laureate in Physiology or Medicine. He is a professor of biology at the California Institute of Technology (Caltech), where he served as president from 1997 to 2006. [1] He founded the Whitehead Institute and directed it from 1982 to 1990.
David Baltimore, a Nobel Prize-winning biologist, devised a system called the Baltimore Classification System to classify different viruses based on their unique replication strategy. There are seven different replication strategies based on this system (Baltimore Class I, II, III, IV, V, VI, VII).
The older Baltimore classification (pictured), proposed in 1971 by David Baltimore, places viruses into seven groups (I–VII) based on their nucleic acid type, number of strands and sense, as well as the method the virus uses to generate mRNA. There is some concordance between Baltimore groups and the higher levels of the ICTV scheme.
Under the Baltimore classification scheme, the Caudoviricetes are group I viruses as they have double stranded DNA (dsDNA) genomes, which can be anywhere from 18,000 base pairs to 500,000 base pairs in length. [2] The virus particles have a distinct shape; each virion has an icosahedral head that contains the viral genome, and is attached to a ...
Pararetroviruses (2 C, 1 P) Pages in category "Viruses by Baltimore classification" This category contains only the following page.
Viruses by Baltimore classification (7 C, 1 P) C. Virus classes (12 P) F. Virus families (1 C, 155 P) G. Virus genera (476 P) I. Infraspecific virus taxa (2 C, 86 P) O.