[Mobile gene cassettes and DNA integration elements ].

Integrons are unique natural systems for capturing and spreading the antibiotic resistance genes among Gram-negative bacteria. Gene transfer into small genomes and into plasmids is via site-specific recombination. Integrons act as receptors of antibiotic resistance cassettes.

[Novel site-specific endonuclease from Acinetobacter species M strain].

Site-specific endonuclease R. AspMI was isolated and purified to apparent functional homogeneity from Acinetobacter species (strain M). The enzyme recognizes symmetrical DNA sequence 5'-AGG decreases CCT-3' and cleaves it at the site indicated by the arrow forming blind DNA ends.

[Site-specific endonuclease and methylase from thermophilic bacteria of Bacillus species IS4].

The site-specific endonuclease R . BspIS4I and methylase M . BspIS4I have been isolated and purified to functional purity from the thermophilic strain of Bacillus species IS4.

[A new thermophilic strain of Bacillus coagulans--a producer of BcoK1 site-specific endonuclease].

The strain, producing new site-specific endonuclease BcoKI has been found at the screening of the thermophilic bacteria isolated from tobacco. A phenotype characteristic of the strain is given. It has been identified as a new strain Bacillus coagulans.

[Isolation and properties of site-specific endonuclease BspTS514I from the thermophilic bacteria Bacillus species TS514].

New site-specific endonucleases BspBS31I, BstBS32I, BspIS41, BstTS5I, BspTS514I were isolated from five thermophilic soil bacteria Bacillus sp. BS31, B. stearothermophilus BS32, Bacillus sp.

[Isolation and properties of BstBSI restriction endonuclease from the thermophilic soil bacteria Bacillus stearothermophilus BS].

A new restriction endonuclease BstBSI was isolated and purified from the thermophilic soil bacterium Bacillus stearothermophilus BS by the blue sepharose and hydroxyapatite chromatographies. The enzyme is an isoschizomer of SnaI from Sphaerotilus natans C. It recognizes the hexanucleotide GTATAC and cleaves DNA in the center of the sequence.

[BspLS2I--a new site-specific endonuclease from the thermophilic bacteria Bacillus species LS2].

A new restriction endonuclease BspLS2I was isolated from the thermophilic bacterium Bacillus species LS2 and purified by blue sepharose and hydroxyapatite chromatographies. The enzyme is an isoschizomer of SduI from Streptococcus durans. BspLS2I recognizes the sequence 5' G(G/A/T)GC(C/T/A) decreases C 3' on double-stranded DNA and cleaves it is indicated by the arrow to yield sticky-ended DNA fragments.