Potassium in PDB 1v3o: Crystal Structure of D(Gcgagagc): the Dna Quadruplex Structure Split From the Octaplex

The structure of Crystal Structure of D(Gcgagagc): the Dna Quadruplex Structure Split From the Octaplex, PDB code: 1v3o was solved by J.Kondo, S.Umeda, T.Sunami, A.Takenaka, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	9.00 / 1.70
Space group	I 2 2 2
Cell size a, b, c (Å), α, β, γ (°)	34.650, 42.490, 64.080, 90.00, 90.00, 90.00
R / Rfree (%)	26.2 / 29.6

The structure of Crystal Structure of D(Gcgagagc): the Dna Quadruplex Structure Split From the Octaplex also contains other interesting chemical elements:

Iodine

(I)

2 atoms

The binding sites of Potassium atom in the Crystal Structure of D(Gcgagagc): the Dna Quadruplex Structure Split From the Octaplex (pdb code 1v3o). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total only one binding site of Potassium was determined in the Crystal Structure of D(Gcgagagc): the Dna Quadruplex Structure Split From the Octaplex, PDB code: 1v3o:

Potassium binding site 1 out of 1 in the Crystal Structure of D(Gcgagagc): the Dna Quadruplex Structure Split From the Octaplex


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Crystal Structure of D(Gcgagagc): the Dna Quadruplex Structure Split From the Octaplex within 5.0Å range: probe atom residue distance (Å) B Occ A:K104 b:29.4 occ:0.50 O6 A:DG5 2.7 28.7 1.0 O6 B:DG13 2.9 35.6 1.0 O A:HOH25 3.0 34.8 1.0 O B:HOH97 3.2 88.2 1.0 C6 B:DG13 3.5 33.0 1.0 C6 A:DG5 3.7 26.9 1.0 N1 B:DG13 3.8 34.8 1.0 N1 A:DG5 3.9 26.4 1.0 N6 B:DA12 4.3 31.0 1.0 C5 B:DG13 4.7 39.5 1.0 O B:HOH48 4.7 49.7 1.0 O B:HOH102 4.9 70.7 1.0 C2 B:DG13 4.9 30.9 1.0 O B:HOH50 5.0 60.0 1.0

J.Kondo, W.Adachi, S.Umeda, T.Sunami, A.Takenaka. Crystal Structures of A Dna Octaplex with I-Motif of G-Quartets and Its Splitting Into Two Quadruplexes Suggest A Folding Mechanism of Eight Tandem Repeats Nucleic Acids Res. V. 32 2541 2004.
ISSN: ISSN 0305-1048
PubMed: 15133122
DOI: 10.1093/NAR/GKH575