title: Bacillus species LU4 is an effective producer of thermostable site-specific endonuclease BspLU4I, an isoschizomer of AvaI.
abstract: The site-specific endonuclease BspLU4I was discovered in the thermophilic Bacillus species LU4 strain and purified to functionally pure state by chromatography on blue agarose, hydroxyapatite HTP, and heparin-Sepharose columns. Analysis of cleavage patterns of different DNAs with known nucleotide sequences demonstrated that the enzyme recognizes the CPyCGPuG site on the DNA. Cleavage points in the sequence were determined with the elongated primer method. It was shown that the endonuclease is an isoschizomer of AvaI. The final yield of the enzyme is 2.25.10(6) units per g wet biomass.
authors.affiliation: Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia.
authors.forename: I V
authors.initials: IV
authors.lastname: Svadbina
authors.forename: E N
authors.initials: EN
authors.lastname: Zheleznyakova
authors.forename: L A
authors.initials: LA
authors.lastname: Zheleznaya
authors.forename: N I
authors.initials: NI
authors.lastname: Matvienko
mesh_terms: D001407:Bacillus / Q000201:enzymology*; D001483:Base Sequence; D001665:Binding Sites / Q000235:genetics; D004247:DNA / Q000235:genetics / Q000378:metabolism; D015252:Deoxyribonucleases, Type II Site-Specific / Q000096:biosynthesis* / Q000302:isolation & purification / Q000378:metabolism; D004587:Electrophoresis, Agar Gel; D004591:Electrophoresis, Polyacrylamide Gel; D004795:Enzyme Stability; D008970:Molecular Weight; D012822:Silicon Dioxide / Q000737:chemistry; D013379:Substrate Specificity; D013696:Temperature
chemical_list: D012822:Silicon Dioxide; D004247:DNA; C028678:CYCGRG-specific type II deoxyribonucleases; D015252:Deoxyribonucleases, Type II Site-Specific