Potassium in PDB 4qk8: Thermoanaerobacter Pseudethanolicus C-Di-Amp Riboswitch

The structure of Thermoanaerobacter Pseudethanolicus C-Di-Amp Riboswitch, PDB code: 4qk8 was solved by A.Gao, A.Serganov, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	28.72 / 3.05
Space group	P 31 2 1
Cell size a, b, c (Å), α, β, γ (°)	114.868, 114.868, 114.709, 90.00, 90.00, 120.00
R / Rfree (%)	18.1 / 19.5

The structure of Thermoanaerobacter Pseudethanolicus C-Di-Amp Riboswitch also contains other interesting chemical elements:

Magnesium

(Mg)

4 atoms

The binding sites of Potassium atom in the Thermoanaerobacter Pseudethanolicus C-Di-Amp Riboswitch (pdb code 4qk8). 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 Thermoanaerobacter Pseudethanolicus C-Di-Amp Riboswitch, PDB code: 4qk8:

Potassium binding site 1 out of 1 in the Thermoanaerobacter Pseudethanolicus C-Di-Amp Riboswitch


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Thermoanaerobacter Pseudethanolicus C-Di-Amp Riboswitch within 5.0Å range: probe atom residue distance (Å) B Occ A:K205 b:99.8 occ:1.00 O2' A:GTP1 3.5 73.8 1.0 O3' A:GTP1 3.7 76.1 1.0 O2' A:U11 3.8 76.1 1.0 OP1 A:G2 3.8 77.7 1.0 O2' A:C12 4.1 97.1 1.0 C1' A:C12 4.1 87.4 1.0 O2 A:U11 4.2 74.3 1.0 O4' A:C12 4.4 86.0 1.0 C5' A:G2 4.4 72.6 1.0 P A:G2 4.4 78.7 1.0 C2' A:U11 4.5 75.4 1.0 C2' A:GTP1 4.7 74.2 1.0 C2' A:C12 4.8 92.2 1.0 C3' A:GTP1 4.8 75.4 1.0 C1' A:A21 4.9 68.5 1.0 O5' A:G2 4.9 73.3 1.0

A.Gao, A.Serganov. Structural Insights Into Recognition of C-Di-Amp By the Ydao Riboswitch. Nat.Chem.Biol. V. 10 787 2014.
ISSN: ISSN 1552-4450
PubMed: 25086507
DOI: 10.1038/NCHEMBIO.1607