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[The site-specific endonucleases of bacteria in the genus Bacillus].

Production regularities of site-specific endonucleases by aerobic spore-forming bacteria, separated from different ecological sources have been studied. It is shown that more than 1/3 of all the studied cultures produce site-specific endonucleases. A dependence of occurrence frequency of bacteria producers on the econiche of their separation has been noticed. The data on production of species-specific restrictases are obtained which can serve additional characteristics for differentiation of close species of Bacillus.