FIELD: microbiology, biotechnology. SUBSTANCE: product: restriction endonuclease recognizing and splitting the nucleotide sequence 5′-CCATGG-3′. New strain of Bacillus pumilus (ВКПМ B-6308) is proposed. Strain is a producer restrictase Bpu 19-1 isolated from the soil after screening of restrictase producers. The yield of enzyme is 5000 U/g wet biomass, specific activity of the end enzyme is 20000 U/ml. Restrictase Bpu 19-1 is an isoschizomer of restrictase NspSA III and can replace the latter in all genetic engineering investigations. EFFECT: high yield and activity of enzyme. 1 dwg
Authors
Dates
1995-10-20—Published
1993-08-16—Filed