Site-Specific Nickase from Bacillus Species Strain D6

被引：0
|
作者：
L. A. Zheleznaya
T. A. Perevyazova
D. V. Alzhanova
N. I. Matvienko
机构：
[1] Institute of Theoretical and Experimental Biophysics,Russian Academy of Sciences
来源：
Biochemistry (Moscow) | 2001年 / 66卷
关键词：
site-specific endonucleases; site-specific nickases; DNA methyltransferases;
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学科分类号：
摘要：
Three site-specific endonucleases were found in thermophilic strain Bacillus species D6. One of them, BspD6II, is an isoschizomer of Eco57I. The second, BspD6III, is present in the strain in very small amount; therefore, it has not been characterized. This paper is devoted to the third, BspD6I, which recognizes pentanucleotide site 5'-GAGTC-3' and cleaves only one DNA strand at a distance of 4 nucleotides from the site in the 3'-direction in the chain with the GAGTC sequence, i.e., it behaves as a site-specific nickase. Nickase N.BspD6I cleaves one DNA strand only in double-stranded DNA and does not cleave single-stranded DNA. Site-specific methylase SscL1I (an isohypectomer of M·HinfI) that methylates adenine in the sequence 5'-GANTC-3' prevents DNA hydrolysis by nickase BspD6I.
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页码：989 / 993
页数：4
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