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Title: [Isolation and properties of the SuaI restriction endonuclease from the thermoacidophilic archaebacterium Sulfolobus acidocaldarius]. Author: Prangishvili DA, Vashakidze RP, Chelidze MG, Chinchaladze DZ, Tsalkalamanidze NV. Journal: Biokhimiia; 1987 Jun; 52(6):1043-50. PubMed ID: 2822145. Abstract: A new restriction endonuclease SuaI was isolated from the thermoacidophilic archaebacterium Sulfolobus acidocaldarius. The enzyme is an isoschizomer of BspR1; it recognizes tetranucleotide GGCC and cleaves DNA in the center of this sequence. SuaI requires Mg2+, the optimal concentration being 6 mM. KCl at concentrations above 25 mM significantly inhibits the enzyme activity. The pH optimum lies within the range of 6--7 at 70 degrees C, the temperature optimum is at 70--75 degrees C. The enzyme is highly stable at temperatures up to 80 degrees C. DNA of S. acidocaldarius is not cleaved by the enzyme.[Abstract] [Full Text] [Related] [New Search]