Detecting polynucleotide motifs: Pentads, hexads, and beyond
Fig 5
Dimeric DNA structure (PDB ID: 1EEG; [25]) shown as (A) a cartoon model visualized in PyMOL [26] and (B) a layer diagram generated with DrawTetrado [27].
The G4 helix is colored green and contains two (A:)G:G:G:G(:A) hexads. Adenines that interact with tetrad-forming guanines are highlighted in red.