Isolation and characterization of site-specific endonuclease Bsp123 I from thermophilic strain Bacillus species 123. 1998

D V Alzhanova, and D T Alzhanov, and L A Zheleznaya, and N I Matvienko
Institute of Protein Research, Russian Academy of Sciences, Pushchino, Moscow Region, 142292 Russia. nikmatv@sun.ipr.serpukhov.su

The preparation of site-specific endonuclease Bsp123 I was isolated and purified from the thermophilic strain Bacillus species 123. Endonuclease Bsp123 I recognizes the sequence CGCG and cleaves it in the middle between nucleotides G and C, producing blunt ends. Thus, Bsp123 I is an isoschizomer of FnuDII. The maximal activity of the enzyme is displayed at 42 degrees C, pH 8.0, 100 mM NaCl, 10 mM MgCl2.

UI MeSH Term Description Entries
D004279 DNA, Viral Deoxyribonucleic acid that makes up the genetic material of viruses. Viral DNA
D001407 Bacillus A genus of BACILLACEAE that are spore-forming, rod-shaped cells. Most species are saprophytic soil forms with only a few species being pathogenic. Bacillus bacterium
D013379 Substrate Specificity A characteristic feature of enzyme activity in relation to the kind of substrate on which the enzyme or catalytic molecule reacts. Specificities, Substrate,Specificity, Substrate,Substrate Specificities
D015252 Deoxyribonucleases, Type II Site-Specific Enzyme systems containing a single subunit and requiring only magnesium for endonucleolytic activity. The corresponding modification methylases are separate enzymes. The systems recognize specific short DNA sequences and cleave either within, or at a short specific distance from, the recognition sequence to give specific double-stranded fragments with terminal 5'-phosphates. Enzymes from different microorganisms with the same specificity are called isoschizomers. EC 3.1.21.4. DNA Restriction Enzymes, Type II,DNase, Site-Specific, Type II,Restriction Endonucleases, Type II,Type II Restriction Enzymes,DNase, Site Specific, Type II,Deoxyribonucleases, Type II, Site Specific,Deoxyribonucleases, Type II, Site-Specific,Site-Specific DNase, Type II,Type II Site Specific DNase,Type II Site Specific Deoxyribonucleases,Type II Site-Specific DNase,Type II Site-Specific Deoxyribonucleases,Deoxyribonucleases, Type II Site Specific,Site Specific DNase, Type II

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