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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.
Tailed bacteriophage structure: (1) head, (2) tail, (3) DNA, (4) capsid, (5) collar, (6) sheath, (7) tail fibres, (8) spikes, (9) base plate Transmission electron micrograph of Gamma-Phage Illustrations of various Caudovirales. Not to scale. Caudoviricetes is a class of viruses known as the tailed bacteriophages (cauda is Latin for "tail"). [1]
[8] [9] The molecular structure of Ff phages was determined using a number of physical techniques, especially X-ray fiber diffraction, [2] [6] solid-state NMR and cryo-electron microscopy. [10] The structures of the phage capsid and of some other phage proteins are available from the Protein Data Bank. [6]
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 ...
Schematic drawing of a Φ29 phage virion (cross section and side view). The structure of Φ29 is composed of seven main proteins: the terminal protein (p3), the head or capsid protein (p8), the head or capsid fiber protein (p8.5), the distal tail knob (p9), the portal or connector protein (p10), the tail tube or lower collar proteins (p11), and the tail fibers or appendage proteins (p12*).
The remaining part of the membrane is degraded and then DNA from the head of the virus can travel through the tail tube and enter the E. coli cell. [ citation needed ] In 1952, Hershey and Chase [ 19 ] provided key evidence that the phage DNA, as distinct from protein, enters the host bacterial cell upon infection and is thus the genetic ...
Italian Sea Group is not liable in relation to the fatal sinking of Mike Lynch's superyacht, which killed the British tech billionaire and six others, its chief executive said on Tuesday. The ...
A prophage is a bacteriophage (often shortened to "phage") genome that is integrated into the circular bacterial chromosome or exists as an extrachromosomal plasmid within the bacterial cell. [1] Integration of prophages into the bacterial host is the characteristic step of the lysogenic cycle of temperate phages.