Quadruplex Structures
It also allows formation of secondary structures of single stranded DNA and RNA G-rich called G-quadruplexes (G4-DNA and G4-RNA) at least in vitro. It needs four triplets of G, separated by short spacers. This permits assembly of planar quartets which are composed of stacked associations of hoogsteen bonded guanines.
Read more about this topic: Hoogsteen Base Pair
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“The philosopher believes that the value of his philosophy lies in its totality, in its structure: posterity discovers it in the stones with which he built and with which other structures are subsequently built that are frequently better—and so, in the fact that that structure can be demolished and yet still possess value as material.”
—Friedrich Nietzsche (1844–1900)