[Use of affinity chromatography for the purification of specific endonuclease Eco RI and Bg1 II].
The highly active preparations of specific endonucleases Eco RI and Bgl II were purified by affinity chromatography from E. coli and Bacillus globiggii cells, respectively. The isolation and purification procedures included cell disruption by ultrasonication, ultracentrifugation and chromatography. Blue dextrane-Sepharose, folate-Sepharose and phenyl-Sepharose were used as affinity adsorbents. The optimal conditions for the adsorption and elution of the endonucleases excluding intermediate steps of dialysis and concentration were selected. A high degree of purification was achieved by a consecutive use of adsorbents with different ligands. The purified enzyme does not contain non-specific nucleases or phosphatases, is sufficiently concentrated and can be used for specific hydrolysis of DNA.
D001407:Bacillus / Q000201:enzymology*; D001426:Bacterial Proteins; D002846:Chromatography, Affinity / Q000379:methods; D004262:DNA Restriction Enzymes / Q000302:isolation & purification*; D015246:Deoxyribonuclease EcoRI; D015252:Deoxyribonucleases, Type II Site-Specific; D004926:Escherichia coli / Q000201:enzymology*
D001426:Bacterial Proteins; D004262:DNA Restriction Enzymes; D015246:Deoxyribonuclease EcoRI; C024404:BglII endonuclease; D015252:Deoxyribonucleases, Type II Site-Specific
Ispol'zovanie metodov affinnoĭ khromatografii dlia ochistki spetsificheskikh endonukleaz Eco RI i Bg1 II.