FIELD: biochemistry, enzymology. SUBSTANCE: strain Bacillus stearothermophilus - a producer of restrictase Bst T101 is isolated from the soil by screening of restrictase producers. Enzyme recognizes and cleaves nucleotide sequence 5'-GGTNACC-3'. Enzyme yield is 4 000 U/g wet biomass, specific activity of the end enzyme is 10 000 U/ml. Restrictase BSt T101 is an isoschizomer of restrictase 5′-GGTNACC-3′ and can replace the latter in all genetic engineering works. Restrictase Bst T101 can be used for investigation of protein-nucleic acid interaction specificity. EFFECT: strain and enzyme indicated above, high yield and specific activity of an enzyme. 1 dwg
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Dates
1998-07-20—Published
1996-06-14—Filed