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Some DNA viruses encode a recombinase that facilitates homologous recombination. A well-studied example is the UvsX recombinase encoded by bacteriophage T4. [10] UvsX is homologous to bacterial RecA. UvsX, like RecA, can facilitate the assimilation of linear single-stranded DNA into an homologous DNA duplex to produce a D-loop.
[1] [2] This prevents two different genes coding for the same region from recombining (ex. V-V recombination). [1] RSSs are located between V, D, and J segments of the germ-line DNA of maturing B and T lymphocytes and are permanently spliced out of the final Ig mRNA product after V(D)J recombination is complete. [1]
Download as PDF; Printable version; In other projects Wikidata item; Appearance. move to sidebar hide. DNA recombination may refer to: Genetic recombination, a ...
In genetic engineering, recombination can also refer to artificial and deliberate recombination of disparate pieces of DNA, often from different organisms, creating what is called recombinant DNA. A prime example of such a use of genetic recombination is gene targeting, which can be used to add, delete or otherwise change an organism's genes.
Recombinant DNA is the general name for a piece of DNA that has been created by combining two or more fragments from different sources. Recombinant DNA is possible because DNA molecules from all organisms share the same chemical structure, differing only in the nucleotide sequence.
Recombination between two DNA sites begins by the recognition and binding of these sites – one site on each of two separate double-stranded DNA molecules, or at least two distant segments of the same molecule – by the recombinase enzyme. This is followed by synapsis, i.e. bringing the sites together to form the synaptic complex.
Recombineering (recombination-mediated genetic engineering) [1] is a genetic and molecular biology technique based on homologous recombination systems, as opposed to the older/more common method of using restriction enzymes and ligases to combine DNA sequences in a specified order.