Potassium in PDB 6w9p: TEL26 Parallel Four-Quartet G-Quadruplex with K+

The structure of TEL26 Parallel Four-Quartet G-Quadruplex with K+, PDB code: 6w9p was solved by S.E.Mccarthy, L.A.Yatsunyk, D.Beseiso, J.Miao, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	33.50 / 1.99
Space group	P 31 2 1
Cell size a, b, c (Å), α, β, γ (°)	38.681, 38.681, 64.921, 90, 90, 120
R / Rfree (%)	19.7 / 20.9

The structure of TEL26 Parallel Four-Quartet G-Quadruplex with K+ also contains other interesting chemical elements:

Sodium

(Na)

1 atom

The binding sites of Potassium atom in the TEL26 Parallel Four-Quartet G-Quadruplex with K+ (pdb code 6w9p). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 3 binding sites of Potassium where determined in the TEL26 Parallel Four-Quartet G-Quadruplex with K+, PDB code: 6w9p:
Jump to Potassium binding site number: 1; 2; 3;

Potassium binding site 1 out of 3 in the TEL26 Parallel Four-Quartet G-Quadruplex with K+


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of TEL26 Parallel Four-Quartet G-Quadruplex with K+ within 5.0Å range: probe atom residue distance (Å) B Occ A:K101 b:49.2 occ:1.00 O6 A:DG22 2.5 35.9 1.0 O6 A:DG16 2.5 35.2 1.0 O6 A:DG10 2.6 35.1 1.0 O6 A:DG4 2.7 41.5 1.0 O6 A:DG11 2.7 32.1 1.0 O6 A:DG5 2.9 36.0 1.0 O6 A:DG17 3.2 37.3 1.0 C6 A:DG16 3.4 37.8 1.0 C6 A:DG22 3.4 37.6 1.0 O6 A:DG23 3.4 34.8 1.0 C6 A:DG10 3.5 32.9 1.0 C6 A:DG4 3.6 39.6 1.0 K A:K102 3.6 38.0 1.0 C6 A:DG11 3.6 32.8 1.0 N1 A:DG16 3.7 33.4 1.0 N1 A:DG22 3.7 35.8 1.0 C6 A:DG5 3.7 35.8 1.0 N1 A:DG4 3.8 35.7 1.0 N1 A:DG10 3.8 31.3 1.0 N1 A:DG5 3.9 36.7 1.0 N1 A:DG11 4.0 32.7 1.0 C6 A:DG17 4.1 35.2 1.0 C6 A:DG23 4.3 36.0 1.0 N1 A:DG17 4.5 31.6 1.0 N1 A:DG23 4.5 36.5 1.0 C5 A:DG16 4.7 37.3 1.0 C5 A:DG22 4.7 35.9 1.0 C5 A:DG11 4.7 33.9 1.0 C5 A:DG10 4.8 38.6 1.0 C5 A:DG4 4.9 40.5 1.0 C5 A:DG5 4.9 38.5 1.0 C2 A:DG16 5.0 36.2 1.0

Potassium binding site 2 out of 3 in the TEL26 Parallel Four-Quartet G-Quadruplex with K+


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of TEL26 Parallel Four-Quartet G-Quadruplex with K+ within 5.0Å range: probe atom residue distance (Å) B Occ A:K102 b:38.0 occ:1.00 O6 A:DG5 2.7 36.0 1.0 O6 A:DG6 2.7 34.1 1.0 O6 A:DG23 2.7 34.8 1.0 O6 A:DG11 2.8 32.1 1.0 O6 A:DG17 2.8 37.3 1.0 O6 A:DG12 2.8 37.2 1.0 O6 A:DG18 2.9 33.1 1.0 O6 A:DG24 2.9 39.6 1.0 K A:K103 3.5 41.8 1.0 C6 A:DG5 3.5 35.8 1.0 C6 A:DG6 3.6 34.4 1.0 K A:K101 3.6 49.2 1.0 C6 A:DG23 3.6 36.0 1.0 C6 A:DG11 3.6 32.8 1.0 C6 A:DG17 3.7 35.2 1.0 C6 A:DG12 3.7 37.6 1.0 C6 A:DG24 3.8 35.9 1.0 C6 A:DG18 3.8 31.3 1.0 N1 A:DG6 3.8 33.7 1.0 N1 A:DG5 3.9 36.7 1.0 N1 A:DG23 3.9 36.5 1.0 N1 A:DG17 4.0 31.6 1.0 N1 A:DG11 4.0 32.7 1.0 N1 A:DG24 4.0 32.4 1.0 N1 A:DG12 4.0 34.0 1.0 N1 A:DG18 4.2 30.9 1.0 C5 A:DG5 4.7 38.5 1.0 C5 A:DG11 4.8 33.9 1.0 C5 A:DG23 4.8 35.5 1.0 C5 A:DG6 4.8 35.5 1.0 O6 A:DG22 4.9 35.9 1.0 C5 A:DG17 4.9 34.8 1.0 C5 A:DG12 4.9 33.2 1.0

Potassium binding site 3 out of 3 in the TEL26 Parallel Four-Quartet G-Quadruplex with K+


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 3 of TEL26 Parallel Four-Quartet G-Quadruplex with K+ within 5.0Å range: probe atom residue distance (Å) B Occ A:K103 b:41.8 occ:1.00 O6 A:DG25 2.6 36.0 1.0 O6 A:DG7 2.6 30.7 1.0 O6 A:DG19 2.7 33.8 1.0 O6 A:DG18 2.7 33.1 1.0 O6 A:DG13 2.8 33.7 1.0 O6 A:DG24 2.8 39.6 1.0 O6 A:DG12 2.9 37.2 1.0 O6 A:DG6 3.0 34.1 1.0 K A:K102 3.5 38.0 1.0 C6 A:DG25 3.6 40.2 1.0 C6 A:DG24 3.6 35.9 1.0 C6 A:DG18 3.6 31.3 1.0 C6 A:DG7 3.6 36.2 1.0 C6 A:DG19 3.7 38.0 1.0 C6 A:DG12 3.7 37.6 1.0 C6 A:DG13 3.7 33.8 1.0 C6 A:DG6 3.8 34.4 1.0 N1 A:DG25 3.8 40.4 1.0 N1 A:DG24 3.9 32.4 1.0 N1 A:DG19 3.9 35.9 1.0 N1 A:DG7 4.0 35.4 1.0 N1 A:DG18 4.0 30.9 1.0 N1 A:DG12 4.0 34.0 1.0 N1 A:DG6 4.0 33.7 1.0 N1 A:DG13 4.1 33.1 1.0 C5 A:DG24 4.8 34.4 1.0 C5 A:DG18 4.8 34.2 1.0 C5 A:DG25 4.9 38.5 1.0 C5 A:DG12 4.9 33.2 1.0 C5 A:DG7 4.9 35.1 1.0 C5 A:DG6 4.9 35.5 1.0 C5 A:DG19 5.0 37.5 1.0

S.E.Mccarthy, L.A.Yatsunyk, D.Beseiso, J.Miao. Structural Diversity and Ligand Binding of G-Rich Dna From Telomeric Region of Tetrahymena Thermophila To Be Published.