KMID : 0377619880530100693
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Korean Jungang Medical Journal 1988 Volume.53 No. 10 p.693 ~ p.699
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Restriction and Modification System in Brevibacterium divaricatum I
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Abstract
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The isolation and, characterization of a new type II restriction endonuclease (Bdi I) from Brevibacterium divaricatum KCT 8035 were described. Bdi I. endonuclease was isolated by the following procedures; ammonium sulfate fractionation, DEAE-cellulose chromatography, phosphocellulose chromatography and hydroxylapatite chromatography.
The isolated Bdi I restriction endonuclease was an isoschizomer of Cla I which recognizes 5 ATCGAT 3 , and cleaves between T and C within the recognition seguence. The optimal temperature on the enzyme activity was 37¡ÆC and optimal salt (NaCl) concentration was 50-100mM. Also Bdi I endonuclease reguired Mgr as a cofactor.
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