Examples of Lambda phage in the following topics:
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- Enterobacteria phage λ (lambda phage, coliphage λ) is a bacterial virus that infects the bacterial species Escherichia coli.
- Enterobacteria phage λ (lambda phage, coliphage λ) is a bacterial virus, or bacteriophage, that infects the bacterial species Escherichia coli.
- Lambda phage consists of a virus particle including a head (also known as a capsid), tail and tail fibers.
- Usually, a "lytic cycle" ensues, where the lambda DNA is replicated many times and the genes for head, tail and lysis proteins are expressed.
- Lambda phage has been of major importance in the study of specialized transduction.
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- When undergoing a lysogenic cycle, the phage genome exists as a plasmid in the bacterium, unlike other phages (e.g., the lambda phage) that integrate into the host DNA.
- At around 93Kbp in length, the genome of the P1 phage is moderately large compared to the genomes of others, like T4 (169Kbp), lambda (48Kbp), and Ff (6.4Kbp).
- Enterobacteria phage λ (lambda phage, coliphage λ) is a bacterial virus, or bacteriophage, that infects the bacterial species Escherichia coli.
- Lambda phage consists of a virus particle including a head (also known as a capsid), a tail, and tail fibers.
- Schematic representation of the insertion of the bacteriophage lambda.
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- Of these, at least 4950 phages (96%) have tails.
- The dsDNA tailed phages, or Caudovirales, account for 95% of all the phages reported in the scientific literature, and possibly make up the majority of phages on the planet.
- Those phages able to undergo lysogeny are known as temperate phages.
- An example of a bacteriophage known to follow the lysogenic cycle and the lytic cycle is the phage lambda of E. coli.
- An altogether different phage type, the filamentous phages, make the host cell continually secrete new virus particles.
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- Bacteriophage Mu, or phage Mu, is a temperate bacteriophage, a type of virus that infects bacteria.
- All of the known temperate phages employ one of only three different systems for their lysogenic cycle: lambda-like integration/excision, Mu-like transposition, or the plasmid-like partitioning of phage N15.
- Mu phage transposition is the best known example of replicative transposition.
- Structural overview of the T4 phage, from the same family (Myoviridae) as Mu bacteriophage.
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- Phage display is a laboratory tool based on cloning DNA sequences into a phage which presents proteins encoded by that DNA on its surface.
- When the sub-components of the phage are produced, they self-assemble to form new phage particles.
- This inherent property of phages is the basis for the phage display technology.
- Phage display technology is the process of inserting new genetic material into a phage gene.
- Phage display begins by inserting a diverse set of genes into the phage genome with each phage receiving a different gene.
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- Bacteriophage cultures require host cells in which the virus or phage multiply.
- Virus or phage cultures require host cells in which to multiply.
- An altogether different phage type, the filamentous phages, make the host cell continually secrete new virus particles.
- Budding is associated with certain Mycoplasma phages.
- Virus or phage cultures require host cells in which to multiply.
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- As mentioned, marine viruses are mostly bacteriophages, or phages.
- Phages therefore are found only within environments that contain bacteria.
- As a consequence, phages are found almost everywhere.
- As a rule of thumb, many phage biologists expect that phage population densities will exceed bacterial densities by a ratio of 10:1 or more (VBR or virus-to-bacterium ratio).
- Phage-ecological interactions are also qualitatively diverse: there are huge numbers of environment types, bacterial-host types, and also individual phage types.
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- The dsDNA tailed phages, or Caudovirales, account for 95% of all known phages and possibly make up the majority of phages on the planet.
- The Double-Stranded DNA (dsDNA) tailed phages, or Caudovirales, account for 95% of all the phages reported in the scientific literature, and possibly make up the majority of phages on the planet.
- The phages have a head of approximately 55 nm in diameter, loaded with genetic material.
- In the lower micrograph, PAD25 is adhering to bacterial cell debris, and two phages have lost their heads.
- All phages were classified as Siphoviruses based on their morphology.
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- The Leviviridae include the genera Allolevivirus (type species: Enterobacteria phage Qβ) and Levivirus (type species: Enterobacteria phage MS2).
- Cystoviruses are the only bacteriophage that are more closely related to viruses of eukaryotes than to other phage.
- It is thought that the cell then retracts its pilus, pulling the phage toward the bacterium.
- Fusion of the viral envelope with the bacterial outer membrane is facilitated by the phage protein, P6.
- Members of this protein family form the capsid of Pseudomonas phage PP7.
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- A key difference between the lytic and lysogenic phage cycles is that in the lytic phage, the viral DNA exists as a separate molecule within the bacterial cell, and replicates separately from the host bacterial DNA.
- The location of viral DNA in the lysogenic phage cycle is within the host DNA, therefore in both cases the virus/phage replicates using the host DNA machinery, but in the lytic phage cycle, the phage is a free floating separate molecule to the host DNA.
- T4 is a relatively large phage, at approximately 90 nm wide and 200 nm long (most phages range from 25 to 200 nm in length).
- The T4 Phage initiates an E. coli infection by recognizing cell surface receptors of the host with its long tail fibers (LTF).
- The remaining part of the membrane is degraded and then DNA from the head of the phage can travel through the tail tube and enter the E. coli.