G-quadruplex
sketchfab
The four-stranded G-quadruplex structure is formed from a specific segment of DNA sequence, as depicted by PDB identifier 2n21. This particular conformation is stabilized by guanine-rich repeats that create a planar arrangement of four guanine bases linked via hydrogen bonds. The overall architecture is characterized by an anti-parallel orientation between the two strands, with each strand contributing two parallel strands to form the central core. The resulting structure features a square-shaped arrangement of guanine bases and has been implicated in various biological processes, including gene regulation and telomere maintenance.
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