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Structural model at atomic resolution of bacteriophage T4 [1] The structure of a typical myovirus bacteriophage Anatomy and infection cycle of bacteriophage T4. A bacteriophage (/ b æ k ˈ t ɪər i oʊ f eɪ dʒ /), also known informally as a phage (/ ˈ f eɪ dʒ /), is a virus that infects and replicates within bacteria and archaea.
Benzer (1955 – 1959) developed a system for studying the fine structure of the gene using bacteriophage T4 mutants defective in the rIIA and rIIB genes. [ 21 ] [ 22 ] [ 23 ] The techniques employed were complementation tests and crosses to detect recombination , particularly between deletion mutations.
Bacteriophage Lambda Structure at Atomic Resolution [1] Enterobacteria phage λ (lambda phage, coliphage λ, officially Escherichia virus Lambda) is a bacterial virus, or bacteriophage, that infects the bacterial species Escherichia coli (E. coli). It was discovered by Esther Lederberg in 1950. [2]
The virus has complex structural symmetry, with a capsid of the phage that is icosahedral (twenty faces) with an inner diameter of 55 nm and a tail 19 nm in diameter and 28.5 nm long attached to the capsid. [9] The ejection of proteins from the capsid upon infection causes the virus to change structure when it enters the cell. [10]
Enterobacteria phage T2 is a virus that infects and kills E. coli. It is in the genus Tequatrovirus, and the family Myoviridae. Its genome consists of linear double-stranded DNA, with repeats at either end. The phage is covered by a protective protein coat.
Bacteriophage MS2 (Emesvirus zinderi), commonly called MS2, is an icosahedral, positive-sense single-stranded RNA virus that infects the bacterium Escherichia coli and other members of the Enterobacteriaceae. [1] MS2 is a member of a family of closely related bacterial viruses that includes bacteriophage f2, bacteriophage Qβ, R17, and GA. [2]
[1] [2] Phageome is a subcategory of virome, which is all of the viruses that are associated with a host or environment. [3] The term was first used in an article by Modi et al. in 2013 [ 4 ] and has continued to be used in scientific articles that relate to bacteriophages and their metagenomes.
Tailed bacteriophage structure: (1) head, (2) tail, (3) DNA, (4) capsid, (5) collar, (6) sheath, (7) tail fibres, (8) spikes, (9) base plate. In some groups of viruses—such as the class Caudoviricetes ("tail viruses") and the genus Tupanvirus—the capsid carries an appendage called the "tail". The tail of the Caudoviricetes is usually ...