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EcoRV
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EcoRV : ウィキペディア英語版
EcoRV

EcoRV (pronounced "eco R five") is a type II restriction endonuclease isolated from certain strains of ''Escherichia coli''. It has the alternative name Eco32I.
In molecular biology, it is a commonly used restriction enzyme. It creates blunt ends. The enzyme recognizes the palindromic 6-base DNA sequence 5'-GAT|ATC-3' and makes a cut at the vertical line. The complementary sequence is then 3'-CTA|TAG-5'. The ends are blunt and can be ligated into a blunt cloning site easily but with lower efficiency than sticky ends.
== Structure ==
The structure of this enzyme, and several mutants, in complex with the DNA sequence which it cuts has been solved by X-ray crystallography.
The core of the enzyme consists of a five-stranded mixed β-sheet flanked by α-helices. The core is conserved in all other type II restriction endonucleases. It also has an N-terminal dimerization subdomain formed by a short α-helix, a two-stranded antiparallel -sheet, and a long α-helix. This subdomain is found only in EcoRV and PvuII. 〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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