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Abstract
In this study, we describe a brief, sensitive and safe organic dye-based staining method for the visualization of DNA both in agarose and polyacrylamide gels by using Victoria Pure Blue BO (VPBBO). Down to 0.8-1.6 ng of λ DNA/HindIII markers in agarose gels and 0.4-0.8 ng of pUC18 DNA/Mspl markers in polyacrylamide gels can be successfully detected within 15 and 10 min by the new developed technique, respectively. Moreover, the mechanism of the VPBBO staining was investigated and further confirmed by electrospray ionization mass spectrometry (ESI-MS) and molecular docking. The results indicated that the interaction between VPBBO and DNA is mainly due to groove binding.
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