Potassium in PDB 3dio: Crystallization of the Thermotoga Maritima Lysine Riboswitch Bound to Lysine, Iridium Hexamine Soak

The structure of Crystallization of the Thermotoga Maritima Lysine Riboswitch Bound to Lysine, Iridium Hexamine Soak, PDB code: 3dio was solved by A.A.Serganov, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	20.00 / 2.40
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	53.918, 78.004, 140.835, 90.00, 90.00, 90.00
R / Rfree (%)	20.4 / 24.3

The structure of Crystallization of the Thermotoga Maritima Lysine Riboswitch Bound to Lysine, Iridium Hexamine Soak also contains other interesting chemical elements:

Sodium	(Na)	14 atoms
Iridium	(Ir)	18 atoms

The binding sites of Potassium atom in the Crystallization of the Thermotoga Maritima Lysine Riboswitch Bound to Lysine, Iridium Hexamine Soak (pdb code 3dio). 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 Crystallization of the Thermotoga Maritima Lysine Riboswitch Bound to Lysine, Iridium Hexamine Soak, PDB code: 3dio:

Potassium binding site 1 out of 1 in the Crystallization of the Thermotoga Maritima Lysine Riboswitch Bound to Lysine, Iridium Hexamine Soak


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Crystallization of the Thermotoga Maritima Lysine Riboswitch Bound to Lysine, Iridium Hexamine Soak within 5.0Å range: probe atom residue distance (Å) B Occ X:K200 b:24.3 occ:1.00 O X:HOH403 2.7 32.4 1.0 O X:HOH339 2.8 13.8 1.0 OXT X:LYS175 2.8 6.2 1.0 O2' X:G115 2.9 11.4 1.0 O4' X:G12 3.0 14.4 1.0 O4' X:G14 3.1 9.6 1.0 O2' X:G11 3.2 13.0 1.0 N3 X:G12 3.3 15.0 1.0 C X:LYS175 3.6 6.4 1.0 O X:LYS175 3.6 6.9 1.0 C4' X:G12 3.6 14.1 1.0 C4' X:G14 3.9 9.3 1.0 C1' X:G14 3.9 9.2 1.0 C1' X:G12 3.9 14.9 1.0 C2' X:G11 4.0 12.1 1.0 N2 X:G12 4.0 14.1 1.0 C2' X:G115 4.1 10.5 1.0 C2 X:G12 4.1 14.3 1.0 O2' X:G14 4.3 10.2 1.0 C4 X:G12 4.3 14.8 1.0 O X:HOH328 4.3 4.6 1.0 C1' X:G115 4.3 9.6 1.0 C5' X:G12 4.3 14.2 1.0 C5' X:G14 4.5 9.2 1.0 N9 X:G12 4.5 14.7 1.0 C3' X:G11 4.6 12.7 1.0 C2' X:G14 4.7 9.6 1.0 C3' X:G12 4.9 15.1 1.0 O X:HOH402 4.9 13.8 1.0 O4' X:G115 4.9 10.3 1.0 N9 X:G14 5.0 9.0 1.0 CA X:LYS175 5.0 6.2 1.0

A.Serganov, L.Huang, D.J.Patel. Structural Insights Into Amino Acid Binding and Gene Control By A Lysine Riboswitch. Nature V. 455 1263 2008.
ISSN: ISSN 0028-0836
PubMed: 18784651
DOI: 10.1038/NATURE07326