Cleavage of double stranded plasmid DNA by lanthanide complexes

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Authors

RITTICH Bohuslav ŠPANOVÁ Alena FALK Martin BENEŠ Milan HRUBÝ Martin

Year of publication 2004
Type Article in Periodical
Magazine / Source Journal of Chromatography B
MU Faculty or unit

Faculty of Science

Citation
Field Genetics and molecular biology
Keywords Cleavage; Lanthanide icomplexes; Plasmid DNA pBR322
Description The use of free lanthanide ions and their complexes for plasmid DNA pBR322 and chromosomal DNA was studied. Plasmid pBR322 DNA was treated by lanthanide chlorides (Eu3+, La3+, Nd3+, Pr3+, Gd3+ ) in HEPES buffer (pH 7.0, 7.5 and 8.0) at different temperatures. The formation of linear and nicked plasmid forms was investigated depending on the reaction conditions. Heterogeneous lanthanide complexes of ethylenediamine tetraacetic acid (EDTA) immobilized on insoluble methacrylate support and iminodiacetic acid (IDA) immobilized on styrene support were used as catalysts plasmid for DNA pBR322 cleavage, too. The temperature of reaction mixture had substantial influence on cleavage rate. The precipitation of DNA occured during the measurement of interactions between chromosomal DNA and La3+ ions.
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