Sodium in PDB 1k8p: Structure of the Human G-Quadruplex Reveals A Novel Topology

The structure of Structure of the Human G-Quadruplex Reveals A Novel Topology, PDB code: 1k8p was solved by G.N.Parkinson, M.P.H.Lee, S.Neidle, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	10.00 / 2.40
Space group	P 31 2 1
Cell size a, b, c (Å), α, β, γ (°)	56.607, 56.607, 40.546, 90.00, 90.00, 120.00
R / Rfree (%)	19.3 / 28

The structure of Structure of the Human G-Quadruplex Reveals A Novel Topology also contains other interesting chemical elements:

Bromine	(Br)	4 atoms
Potassium	(K)	2 atoms

The binding sites of Sodium atom in the Structure of the Human G-Quadruplex Reveals A Novel Topology (pdb code 1k8p). This binding sites where shown within 5.0 Angstroms radius around Sodium atom.
In total only one binding site of Sodium was determined in the Structure of the Human G-Quadruplex Reveals A Novel Topology, PDB code: 1k8p:

Sodium binding site 1 out of 1 in the Structure of the Human G-Quadruplex Reveals A Novel Topology


Mono view


Stereo pair view

A full contact list of Sodium with other atoms in the Na binding site number 1 of Structure of the Human G-Quadruplex Reveals A Novel Topology within 5.0Å range: probe atom residue distance (Å) B Occ A:Na27 b:62.1 occ:1.00 O4 A:DT7 2.9 40.8 1.0 O A:HOH2010 3.1 51.4 1.0 C7 A:DT7 3.5 44.8 1.0 O2 A:BRU6 3.7 58.2 1.0 C4 A:DT7 3.8 40.2 1.0 N6 A:DA8 3.9 53.5 1.0 C5 A:DT7 4.2 35.9 1.0 C2 A:BRU6 4.6 57.0 1.0 O A:HOH2023 4.7 43.3 0.5

G.N.Parkinson, M.P.Lee, S.Neidle. Crystal Structure of Parallel Quadruplexes From Human Telomeric Dna. Nature V. 417 876 2002.
ISSN: ISSN 0028-0836
PubMed: 12050675
DOI: 10.1038/NATURE755