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<p>DNA base flipping occurs by breaking the <a href="page.php?w=Hydrogen_bonds">hydrogen bonds</a> between the bases and unstacking the base from its neighbors. This could occur through an active process, where an enzyme binds to the DNA and then facilitates rotation of the base, or a passive process, where the base rotates out spontaneously, and this state is recognized and bound by an enzyme. It can be detected using <a href="page.php?w=X-ray_crystallography">X-ray crystallography</a>, <a href="page.php?w=NMR_spectroscopy">NMR spectroscopy</a>,</p><p>
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