Potassium in PDB 1p7b: Crystal Structure of An Inward Rectifier Potassium Channel

The structure of Crystal Structure of An Inward Rectifier Potassium Channel, PDB code: 1p7b was solved by A.Kuo, J.M.Gulbis, J.F.Antcliff, T.Rahman, E.D.Lowe, J.Zimmer, J.Cuthbertson, F.M.Ashcroft, T.Ezaki, D.A.Doyle, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	7.50 / 3.65
Space group	I 2 2 2
Cell size a, b, c (Å), α, β, γ (°)	92.840, 105.620, 258.630, 90.00, 90.00, 90.00
R / Rfree (%)	29.5 / 32.9

The binding sites of Potassium atom in the Crystal Structure of An Inward Rectifier Potassium Channel (pdb code 1p7b). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 4 binding sites of Potassium where determined in the Crystal Structure of An Inward Rectifier Potassium Channel, PDB code: 1p7b:
Jump to Potassium binding site number: 1; 2; 3; 4;

Potassium binding site 1 out of 4 in the Crystal Structure of An Inward Rectifier Potassium Channel


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 An Inward Rectifier Potassium Channel within 5.0Å range: probe atom residue distance (Å) B Occ A:K402 b:57.8 occ:0.50 O B:THR110 3.6 84.5 1.0 O A:THR110 3.7 85.2 1.0 O A:VAL111 3.8 89.3 1.0 O B:VAL111 3.8 88.5 1.0 K A:K403 3.9 5.4 0.5 C A:VAL111 4.0 88.7 1.0 C B:VAL111 4.0 88.3 1.0 CA A:VAL111 4.1 87.3 1.0 CA B:VAL111 4.1 87.1 1.0 C B:THR110 4.4 85.2 1.0 C A:THR110 4.4 85.6 1.0 N B:VAL111 4.6 86.0 1.0 N A:VAL111 4.6 86.2 1.0 N A:GLY112 4.7 89.7 1.0 N B:GLY112 4.7 89.5 1.0

Potassium binding site 2 out of 4 in the Crystal Structure of An Inward Rectifier Potassium Channel


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of Crystal Structure of An Inward Rectifier Potassium Channel within 5.0Å range: probe atom residue distance (Å) B Occ A:K403 b:5.4 occ:0.50 O A:VAL111 3.1 89.3 1.0 O B:VAL111 3.2 88.5 1.0 K B:K401 3.4 22.7 0.5 C A:GLY112 3.8 92.1 1.0 C B:GLY112 3.8 91.5 1.0 CA B:GLY112 3.8 90.6 1.0 CA A:GLY112 3.8 91.2 1.0 K A:K402 3.9 57.8 0.5 O A:GLY112 3.9 91.9 1.0 O B:GLY112 3.9 91.3 1.0 C B:VAL111 4.0 88.3 1.0 C A:VAL111 4.0 88.7 1.0 N A:TYR113 4.2 92.8 1.0 N B:TYR113 4.3 92.5 1.0 N B:GLY112 4.3 89.5 1.0 N A:GLY112 4.3 89.7 1.0 CA A:TYR113 4.8 93.4 1.0 O A:TYR113 4.9 96.2 1.0 CA B:TYR113 4.9 93.3 1.0 O B:TYR113 5.0 96.4 1.0

Potassium binding site 3 out of 4 in the Crystal Structure of An Inward Rectifier Potassium Channel


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 3 of Crystal Structure of An Inward Rectifier Potassium Channel within 5.0Å range: probe atom residue distance (Å) B Occ A:K404 b:56.2 occ:0.50 O A:GLY114 4.0 0.7 1.0 O B:GLY114 4.0 0.7 1.0 C B:GLY114 4.8 0.1 1.0 C A:GLY114 4.8 0.7 1.0 CA B:GLY114 4.8 0.7 1.0 CA A:GLY114 4.8 0.1 1.0

Potassium binding site 4 out of 4 in the Crystal Structure of An Inward Rectifier Potassium Channel


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 4 of Crystal Structure of An Inward Rectifier Potassium Channel within 5.0Å range: probe atom residue distance (Å) B Occ B:K401 b:22.7 occ:0.50 O A:TYR113 3.1 96.2 1.0 O B:TYR113 3.2 96.4 1.0 K A:K403 3.4 5.4 0.5 O B:GLY112 3.5 91.3 1.0 O A:GLY112 3.5 91.9 1.0 C A:TYR113 3.7 95.9 1.0 C B:TYR113 3.8 96.0 1.0 CA A:GLY114 4.0 0.1 1.0 CA B:GLY114 4.0 0.7 1.0 N A:GLY114 4.2 98.4 1.0 N B:GLY114 4.2 98.8 1.0 C B:GLY112 4.3 91.5 1.0 C A:GLY112 4.3 92.1 1.0 CA A:TYR113 4.6 93.4 1.0 CA B:TYR113 4.7 93.3 1.0 N A:TYR113 4.8 92.8 1.0 N B:TYR113 4.8 92.5 1.0

A.Kuo, J.M.Gulbis, J.F.Antcliff, T.Rahman, E.D.Lowe, J.Zimmer, J.Cuthbertson, F.M.Ashcroft, T.Ezaki, D.A.Doyle. Crystal Structure of the Potassium Channel KIRBAC1.1 in the Closed State. Science V. 300 1922 2003.
ISSN: ISSN 0036-8075
PubMed: 12738871
DOI: 10.1126/SCIENCE.1085028