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Abstract for RQ1 RNase-Free DNase
RQ1 (RNA Qualified) RNase-Free DNase is a DNase I that degrades both
double-stranded and single-stranded DNA endonucleolytically, producing 3´-OH
oligonucleotides. RQ1 RNase-Free DNase is used in applications where maintaining
the integrity of the RNA is critical. This DNase is used for applications such
as nick translation, production of random fragments, cleavage of genomic DNA for
footprinting, removal of DNA template after in vitro transcription, and removal
of DNA from RNA samples prior to applications such as RT-PCR.
In the presence of Mg2+, DNase I attacks each strand of DNA
independently and the sites of cleavage are distributed in a statistically
random fashion (Figure 1). In the presence of Mn2+, DNase I cleaves
both strands of DNA at approximately the same site to yield fragments that are
blunt ended or have protruding termini only one or two nucleotides in length.
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