Detecting polynucleotide motifs: Pentads, hexads, and beyond
Fig 7
False positives identified by LinkTetrado in structures with PDB IDs (A) 5LIG, (B) 1NYD, (C) 2KYP, (D) 6H5R, (E) 4R44, and (F) 6W9P.
Top and side views of each structure illustrate the position of the hypothetical polyad residue relative to the G-quartet plane. Hydrogen bonds detected using molecular visualization software are shown in black. Residues are color-coded: green for guanine, red for adenine, blue for thymine, and yellow for cytosine.