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Potassium in PDB 3syo: Crystal Structure of the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium

Protein crystallography data

The structure of Crystal Structure of the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium, PDB code: 3syo was solved by M.R.Whorton, R.Mackinnon, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å) 41.68 / 3.54
Space group P 4 21 2
Cell size a, b, c (Å), α, β, γ (°) 85.737, 85.737, 178.602, 90.00, 90.00, 90.00
R / Rfree (%) 26 / 27.3

Other elements in 3syo:

The structure of Crystal Structure of the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium also contains other interesting chemical elements:

Sodium (Na) 1 atom

Potassium Binding Sites:

The binding sites of Potassium atom in the Crystal Structure of the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium (pdb code 3syo). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 6 binding sites of Potassium where determined in the Crystal Structure of the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium, PDB code: 3syo:
Jump to Potassium binding site number: 1; 2; 3; 4; 5; 6;

Potassium binding site 1 out of 6 in 3syo

Go back to Potassium Binding Sites List in 3syo
Potassium binding site 1 out of 6 in the Crystal Structure of the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium


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 the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K501

b:0.0
occ:0.13
K A:K502 2.8 0.8 0.1
O A:TYR157 3.2 0.9 1.0
O A:GLY156 3.3 0.7 1.0
C A:TYR157 3.8 0.6 1.0
CA A:TYR157 4.3 0.9 1.0
C A:GLY156 4.4 0.1 1.0
N A:GLY158 4.5 0.5 1.0
N A:TYR157 4.8 0.1 1.0
CA A:GLY158 4.8 0.2 1.0
O A:ILE155 5.0 0.7 1.0

Potassium binding site 2 out of 6 in 3syo

Go back to Potassium Binding Sites List in 3syo
Potassium binding site 2 out of 6 in the Crystal Structure of the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium


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 the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K502

b:0.8
occ:0.13
K A:K501 2.8 0.0 0.1
O A:ILE155 3.0 0.7 1.0
K A:K503 3.1 0.1 0.1
O A:GLY156 3.4 0.7 1.0
C A:GLY156 4.2 0.1 1.0
C A:ILE155 4.2 0.9 1.0
CA A:GLY156 4.8 0.3 1.0

Potassium binding site 3 out of 6 in 3syo

Go back to Potassium Binding Sites List in 3syo
Potassium binding site 3 out of 6 in the Crystal Structure of the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium


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 the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K503

b:0.1
occ:0.13
K A:K502 3.1 0.8 0.1
O A:THR154 3.1 0.2 1.0
O A:ILE155 3.2 0.7 1.0
K A:K504 3.5 0.7 0.1
C A:ILE155 4.1 0.9 1.0
C A:THR154 4.2 0.2 1.0
CA A:ILE155 4.3 0.1 1.0
N A:ILE155 4.8 0.8 1.0

Potassium binding site 4 out of 6 in 3syo

Go back to Potassium Binding Sites List in 3syo
Potassium binding site 4 out of 6 in the Crystal Structure of the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium


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 the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K504

b:0.7
occ:0.13
OG1 A:THR154 3.1 0.5 1.0
O A:THR154 3.4 0.2 1.0
K A:K503 3.5 0.1 0.1
CB A:THR154 4.3 0.2 1.0
O A:THR153 4.4 0.0 1.0
C A:THR154 4.4 0.2 1.0
CA A:THR154 5.0 0.3 1.0

Potassium binding site 5 out of 6 in 3syo

Go back to Potassium Binding Sites List in 3syo
Potassium binding site 5 out of 6 in the Crystal Structure of the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 5 of Crystal Structure of the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K505

b:95.0
occ:0.25
O A:GLY318 3.9 0.7 1.0
C A:GLY318 4.4 0.7 1.0
CA A:GLY318 4.6 0.4 1.0
CE A:MET319 4.6 0.5 1.0

Potassium binding site 6 out of 6 in 3syo

Go back to Potassium Binding Sites List in 3syo
Potassium binding site 6 out of 6 in the Crystal Structure of the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 6 of Crystal Structure of the G Protein-Gated Inward Rectifier K+ Channel GIRK2 (KIR3.2) in Complex with Sodium within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K506

b:0.3
occ:1.00
CE2 A:TYR266 3.7 79.1 1.0
OH A:TYR266 3.9 81.8 1.0
CZ A:TYR266 3.9 79.5 1.0
CD2 A:TYR266 4.4 77.4 1.0
O A:TYR266 4.5 75.4 1.0
CE1 A:TYR266 4.7 77.9 1.0

Reference:

M.R.Whorton, R.Mackinnon. Crystal Structure of the Mammalian GIRK2 K(+) Channel and Gating Regulation By G Proteins, Pip(2), and Sodium. Cell(Cambridge,Mass.) V. 147 199 2011.
ISSN: ISSN 0092-8674
PubMed: 21962516
DOI: 10.1016/J.CELL.2011.07.046
Page generated: Sun Dec 13 23:23:29 2020

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