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The integration of phage λ takes place at a special attachment site in the bacterial and phage genomes, called att λ. The sequence of the bacterial att site is called attB, between the gal and bio operons, and consists of the parts B-O-B', whereas the complementary sequence in the circular phage genome is called attP and consists of the parts ...
These hybrid DNA molecules can be then cleaved at the regenerated PstI sites. Its use is not limited to molecular cloning; it is also used in restriction site mapping, genotyping, Southern blotting, restriction fragment length polymorphism (RFLP) and SNP. [9] It is also an isoschizomer restriction enzyme SalPI from Streptomyces albus P. [10]
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.
BamHI, like other type II restriction endonucleases, often requires divalent metals as cofactors to catalyze DNA cleavage. [2] Two-metal ion mechanism is one of the possible catalytic mechanisms of BamHI since the BamHI crystal structure has the ability to bind two metal ions at the active site, which is suitable for the classical two-metal ion mechanism to proceed.
Simultaneously the donor strand is ligated to the target strand after cleavage leaving a single strand overhang on either end of the target sequence. These sites usually contain a 5 to 9 base pair overhang that can create a cohesive end. [10] Transposase then holds the sequence in a crossed formation and ligates the donor strand to the target ...
Antitermination in lambda is induced by two quite distinct mechanisms. The first is the result of interaction between lambda N protein and its targets in the early phage transcripts, and the second is the result of an interaction between the lambda Q protein and its target in the late phage promoter.
M13 is one of the Ff phages (fd and f1 are others), a member of the family filamentous bacteriophage ().Ff phages are composed of circular single-stranded DNA (), which in the case of the m13 phage is 6407 nucleotides long and is encapsulated in approximately 2700 copies of the major coat protein p8, and capped with about 5 copies each of four different minor coat proteins (p3 and p6 at one ...
P1 is a temperate bacteriophage that infects Escherichia coli and some other bacteria. When undergoing a lysogenic cycle the phage genome exists as a plasmid in the bacterium [1] unlike other phages (e.g. the lambda phage) that integrate into the host DNA.