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Potassium in PDB 5kuk: Crystal Structure of Inward Rectifier KIR2.2 K62W Mutant

Protein crystallography data

The structure of Crystal Structure of Inward Rectifier KIR2.2 K62W Mutant, PDB code: 5kuk was solved by S.-J.Lee, F.Ren, S.Heyman, P.Yuan, C.G.Nichols, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å) 91.39 / 2.00
Space group I 4
Cell size a, b, c (Å), α, β, γ (°) 82.695, 82.695, 182.441, 90.00, 90.00, 90.00
R / Rfree (%) 19.9 / 22.7

Potassium Binding Sites:

The binding sites of Potassium atom in the Crystal Structure of Inward Rectifier KIR2.2 K62W Mutant (pdb code 5kuk). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 9 binding sites of Potassium where determined in the Crystal Structure of Inward Rectifier KIR2.2 K62W Mutant, PDB code: 5kuk:
Jump to Potassium binding site number: 1; 2; 3; 4; 5; 6; 7; 8; 9;

Potassium binding site 1 out of 9 in 5kuk

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Potassium binding site 1 out of 9 in the Crystal Structure of Inward Rectifier KIR2.2 K62W Mutant


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 Inward Rectifier KIR2.2 K62W Mutant within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K501

b:22.2
occ:0.25
 O A:TYR146 3.0 19.7 1.0
O A:GLY145 3.1 18.4 1.0
K A:K502 3.2 34.9 0.2
C A:TYR146 3.7 20.1 1.0
C A:GLY145 4.2 19.5 1.0
CA A:TYR146 4.2 19.7 1.0
N A:GLY147 4.5 21.2 1.0
O A:HOH688 4.5 27.1 1.0
CA A:GLY147 4.6 22.2 1.0
N A:TYR146 4.7 19.2 1.0

Potassium binding site 2 out of 9 in 5kuk

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Potassium binding site 2 out of 9 in the Crystal Structure of Inward Rectifier KIR2.2 K62W Mutant


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 Inward Rectifier KIR2.2 K62W Mutant within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K502

b:34.9
occ:0.25
 K A:K503 2.5 24.4 0.2
O A:ILE144 2.9 18.0 1.0
O A:GLY145 3.0 18.4 1.0
K A:K501 3.2 22.2 0.2
C A:GLY145 3.8 19.5 1.0
C A:ILE144 4.1 19.3 1.0
CA A:GLY145 4.3 19.3 1.0
N A:GLY145 4.6 19.1 1.0
N A:TYR146 4.7 19.2 1.0
O A:THR143 4.8 18.5 1.0

Potassium binding site 3 out of 9 in 5kuk

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Potassium binding site 3 out of 9 in the Crystal Structure of Inward Rectifier KIR2.2 K62W Mutant


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 Inward Rectifier KIR2.2 K62W Mutant within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K503

b:24.4
occ:0.25
 K A:K502 2.5 34.9 0.2
O A:THR143 2.9 18.5 1.0
O A:ILE144 2.9 18.0 1.0
K A:K504 3.5 22.6 0.2
C A:ILE144 3.7 19.3 1.0
C A:THR143 4.1 19.4 1.0
CA A:ILE144 4.2 19.2 1.0
N A:GLY145 4.6 19.1 1.0
N A:ILE144 4.7 19.2 1.0
O A:GLY145 4.8 18.4 1.0
CA A:GLY145 4.9 19.3 1.0

Potassium binding site 4 out of 9 in 5kuk

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Potassium binding site 4 out of 9 in the Crystal Structure of Inward Rectifier KIR2.2 K62W Mutant


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 Inward Rectifier KIR2.2 K62W Mutant within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K504

b:22.6
occ:0.25
 OG1 A:THR143 2.8 18.7 1.0
O A:THR143 3.0 18.5 1.0
K A:K503 3.5 24.4 0.2
O A:HOH766 3.7 52.5 0.2
CB A:THR143 3.7 19.1 1.0
C A:THR143 3.9 19.4 1.0
CA A:THR143 4.4 18.8 1.0
N A:ILE144 4.8 19.2 1.0
O A:THR142 4.8 19.3 1.0
CG2 A:THR143 5.0 19.1 1.0

Potassium binding site 5 out of 9 in 5kuk

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Potassium binding site 5 out of 9 in the Crystal Structure of Inward Rectifier KIR2.2 K62W Mutant


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 Inward Rectifier KIR2.2 K62W Mutant within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K505

b:78.7
occ:0.25
 O A:HOH786 3.2 47.5 1.0
O A:HOH769 3.3 58.4 1.0
O A:HOH772 3.6 47.3 1.0
O A:HOH763 4.4 40.3 1.0
O A:HOH606 4.9 40.8 1.0

Potassium binding site 6 out of 9 in 5kuk

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Potassium binding site 6 out of 9 in the Crystal Structure of Inward Rectifier KIR2.2 K62W Mutant


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 Inward Rectifier KIR2.2 K62W Mutant within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K506

b:72.3
occ:0.25
 O A:HOH727 2.7 33.9 1.0
O A:HOH759 2.8 34.3 1.0
O A:HOH602 3.5 36.2 1.0
O A:HOH676 4.3 19.9 1.0
O A:ASP256 4.7 27.4 1.0

Potassium binding site 7 out of 9 in 5kuk

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Potassium binding site 7 out of 9 in the Crystal Structure of Inward Rectifier KIR2.2 K62W Mutant


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 7 of Crystal Structure of Inward Rectifier KIR2.2 K62W Mutant within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K507

b:49.5
occ:0.25
 O A:HOH785 3.8 53.7 1.0

Potassium binding site 8 out of 9 in 5kuk

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Potassium binding site 8 out of 9 in the Crystal Structure of Inward Rectifier KIR2.2 K62W Mutant


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 8 of Crystal Structure of Inward Rectifier KIR2.2 K62W Mutant within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K508

b:93.9
occ:0.25
 O A:HOH780 3.9 49.7 1.0

Potassium binding site 9 out of 9 in 5kuk

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Potassium binding site 9 out of 9 in the Crystal Structure of Inward Rectifier KIR2.2 K62W Mutant


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 9 of Crystal Structure of Inward Rectifier KIR2.2 K62W Mutant within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K509

b:89.1
occ:0.25
 O A:HOH766 3.0 52.5 0.2
O A:HOH775 3.3 56.3 1.0

Reference:

S.J.Lee, F.Ren, E.M.Zangerl-Plessl, S.Heyman, A.Stary-Weinzinger, P.Yuan, C.G.Nichols. Structural Basis of Control of Inward Rectifier KIR2 Channel Gating By Bulk Anionic Phospholipids. J.Gen.Physiol. V. 148 227 2016.
ISSN: ESSN 1540-7748
PubMed: 27527100
DOI: 10.1085/JGP.201611616
Page generated: Sat Aug 9 09:26:10 2025

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