Potassium in PDB 1orq: X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab

The structure of X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab, PDB code: 1orq was solved by Y.Jiang, A.Lee, J.Chen, V.Ruta, M.Cadene, B.T.Chait, R.Mackinnon, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	29.95 / 3.20
Space group	I 4 2 2
Cell size a, b, c (Å), α, β, γ (°)	189.439, 189.439, 150.479, 90.00, 90.00, 90.00
R / Rfree (%)	25.3 / 29.8

The structure of X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab also contains other interesting chemical elements:

Cadmium

(Cd)

7 atoms

The binding sites of Potassium atom in the X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab (pdb code 1orq). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 6 binding sites of Potassium where determined in the X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab, PDB code: 1orq:
Jump to Potassium binding site number: 1; 2; 3; 4; 5; 6;

Potassium binding site 1 out of 6 in the X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab within 5.0Å range: probe atom residue distance (Å) B Occ C:K1 b:72.9 occ:0.25 O C:TYR199 2.9 80.2 1.0 K C:K2 3.4 81.4 0.2 O C:GLY198 3.8 72.8 1.0 C C:TYR199 3.8 79.7 1.0 CA C:TYR199 4.6 77.1 1.0 N C:GLY200 4.6 82.1 1.0 CA C:GLY200 4.7 85.9 1.0 C C:GLY198 4.9 73.3 1.0

Potassium binding site 2 out of 6 in the X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab within 5.0Å range: probe atom residue distance (Å) B Occ C:K2 b:81.4 occ:0.25 O C:GLY198 2.9 72.8 1.0 K C:K3 3.2 71.5 0.2 O C:VAL197 3.4 66.8 1.0 K C:K1 3.4 72.9 0.2 C C:GLY198 3.7 73.3 1.0 CA C:GLY198 4.3 71.4 1.0 C C:VAL197 4.4 66.2 1.0 N C:TYR199 4.5 75.5 1.0 O C:TYR199 4.7 80.2 1.0 CA C:TYR199 4.7 77.1 1.0 N C:GLY198 4.8 68.4 1.0 C C:TYR199 4.8 79.7 1.0

Potassium binding site 3 out of 6 in the X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 3 of X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab within 5.0Å range: probe atom residue distance (Å) B Occ C:K3 b:71.5 occ:0.25 O C:THR196 2.9 60.7 1.0 O C:VAL197 3.0 66.8 1.0 K C:K2 3.2 81.4 0.2 K C:K4 3.3 50.7 0.2 C C:VAL197 3.6 66.2 1.0 C C:THR196 4.1 60.3 1.0 CA C:VAL197 4.1 64.2 1.0 N C:GLY198 4.3 68.4 1.0 N C:VAL197 4.5 62.3 1.0 CA C:GLY198 4.6 71.4 1.0 O C:GLY198 4.9 72.8 1.0 C C:GLY198 5.0 73.3 1.0

Potassium binding site 4 out of 6 in the X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 4 of X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab within 5.0Å range: probe atom residue distance (Å) B Occ C:K4 b:50.7 occ:0.25 O C:THR196 2.5 60.7 1.0 OG1 C:THR196 2.8 54.3 1.0 K C:K3 3.3 71.5 0.2 C C:THR196 3.5 60.3 1.0 CB C:THR196 3.5 55.6 1.0 CA C:THR196 4.1 58.0 1.0 N C:VAL197 4.5 62.3 1.0 CA C:VAL197 4.8 64.2 1.0 CG2 C:THR196 4.9 53.2 1.0

Potassium binding site 5 out of 6 in the X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 5 of X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab within 5.0Å range: probe atom residue distance (Å) B Occ C:K5 b:0.2 occ:0.25 O C:HOH15 4.4 35.8 1.0

Potassium binding site 6 out of 6 in the X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 6 of X-Ray Structure of A Voltage-Dependent Potassium Channel in Complex with An Fab within 5.0Å range:

Y.Jiang, A.Lee, J.Chen, V.Ruta, M.Cadene, B.T.Chait, R.Mackinnon. X-Ray Structure of A Voltage-Dependent K+ Channel Nature V. 423 33 2003.
ISSN: ISSN 0028-0836
PubMed: 12721618
DOI: 10.1038/NATURE01580