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Potassium in PDB 3um7: Crystal Structure of the Human Two Pore Domain K+ Ion Channel Traak (K2P4.1)

Protein crystallography data

The structure of Crystal Structure of the Human Two Pore Domain K+ Ion Channel Traak (K2P4.1), PDB code: 3um7 was solved by S.G.Brohawn, R.Mackinnon, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å) 31.20 / 3.31
Space group P 21 21 21
Cell size a, b, c (Å), α, β, γ (°) 87.938, 130.852, 132.779, 90.00, 90.00, 90.00
R / Rfree (%) 31.7 / 32.3

Potassium Binding Sites:

The binding sites of Potassium atom in the Crystal Structure of the Human Two Pore Domain K+ Ion Channel Traak (K2P4.1) (pdb code 3um7). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 5 binding sites of Potassium where determined in the Crystal Structure of the Human Two Pore Domain K+ Ion Channel Traak (K2P4.1), PDB code: 3um7:
Jump to Potassium binding site number: 1; 2; 3; 4; 5;

Potassium binding site 1 out of 5 in 3um7

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Potassium binding site 1 out of 5 in the Crystal Structure of the Human Two Pore Domain K+ Ion Channel Traak (K2P4.1)


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 Human Two Pore Domain K+ Ion Channel Traak (K2P4.1) within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K310

b:0.2
occ:1.00
 O A:GLY133 4.3 0.8 1.0
CA A:ASN134 4.8 0.9 1.0
O B:GLY133 4.8 0.8 1.0

Potassium binding site 2 out of 5 in 3um7

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Potassium binding site 2 out of 5 in the Crystal Structure of the Human Two Pore Domain K+ Ion Channel Traak (K2P4.1)


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 Human Two Pore Domain K+ Ion Channel Traak (K2P4.1) within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K311

b:30.8
occ:1.00
 O A:TYR132 3.0 0.1 1.0
O A:PHE241 3.0 0.4 1.0
K A:K312 3.1 23.6 1.0
O A:GLY131 3.2 93.1 1.0
O A:GLY240 3.4 85.0 1.0
O B:PHE241 3.4 0.1 1.0
O B:GLY240 3.4 96.5 1.0
O B:TYR132 3.4 0.3 1.0
O B:GLY131 3.6 91.8 1.0
C A:PHE241 3.6 0.4 1.0
C A:TYR132 3.7 0.0 1.0
C B:TYR132 3.9 0.7 1.0
C B:PHE241 4.0 0.1 1.0
N A:GLY242 4.2 0.4 1.0
CA A:GLY242 4.2 0.5 1.0
CA A:TYR132 4.3 0.6 1.0
C A:GLY131 4.4 92.7 1.0
N A:GLY133 4.5 0.3 1.0
C A:GLY240 4.5 80.4 1.0
N B:GLY133 4.5 0.2 1.0
C B:GLY240 4.5 0.4 1.0
CA A:PHE241 4.5 94.8 1.0
N B:GLY242 4.6 0.0 1.0
CA B:TYR132 4.6 0.9 1.0
CA B:PHE241 4.6 0.5 1.0
CA B:GLY133 4.7 0.8 1.0
C B:GLY131 4.7 0.8 1.0
CA B:GLY242 4.7 0.6 1.0
CA A:GLY133 4.7 0.0 1.0
N A:TYR132 4.9 98.8 1.0

Potassium binding site 3 out of 5 in 3um7

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Potassium binding site 3 out of 5 in the Crystal Structure of the Human Two Pore Domain K+ Ion Channel Traak (K2P4.1)


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 Human Two Pore Domain K+ Ion Channel Traak (K2P4.1) within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K312

b:23.6
occ:1.00
 O A:ILE130 2.9 73.3 1.0
O A:GLY240 2.9 85.0 1.0
O A:VAL239 3.0 73.8 1.0
O A:GLY131 3.0 93.1 1.0
K A:K313 3.0 21.7 1.0
O B:GLY131 3.1 91.8 1.0
K A:K311 3.1 30.8 1.0
O B:ILE130 3.1 69.4 1.0
O B:GLY240 3.1 96.5 1.0
O B:VAL239 3.2 68.3 1.0
C A:GLY240 3.6 80.4 1.0
C B:GLY240 3.8 0.4 1.0
C A:GLY131 3.8 92.7 1.0
C B:GLY131 3.9 0.8 1.0
C A:ILE130 4.1 72.7 1.0
C A:VAL239 4.1 72.9 1.0
CA A:GLY240 4.1 73.2 1.0
C B:VAL239 4.2 75.5 1.0
CA B:GLY240 4.3 97.5 1.0
C B:ILE130 4.3 79.0 1.0
N A:PHE241 4.4 85.8 1.0
CA A:GLY131 4.5 85.3 1.0
CA B:GLY131 4.5 91.1 1.0
N A:GLY240 4.6 72.5 1.0
N B:GLY240 4.7 83.1 1.0
N B:TYR132 4.8 0.7 1.0
C A:PHE241 4.8 0.4 1.0
N B:PHE241 4.8 0.7 1.0
CA A:PHE241 4.8 94.8 1.0
N A:GLY131 4.8 76.4 1.0
N A:TYR132 4.8 98.8 1.0
O A:PHE241 4.8 0.4 1.0
N B:GLY131 4.9 85.7 1.0
CA A:TYR132 4.9 0.6 1.0
CA B:TYR132 5.0 0.9 1.0

Potassium binding site 4 out of 5 in 3um7

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Potassium binding site 4 out of 5 in the Crystal Structure of the Human Two Pore Domain K+ Ion Channel Traak (K2P4.1)


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 Human Two Pore Domain K+ Ion Channel Traak (K2P4.1) within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K313

b:21.7
occ:1.00
 O A:VAL239 2.6 73.8 1.0
O A:ILE130 2.9 73.3 1.0
O B:VAL239 3.0 68.3 1.0
O B:THR129 3.0 64.4 1.0
K A:K312 3.0 23.6 1.0
O B:ILE130 3.0 69.4 1.0
O A:THR238 3.1 70.2 1.0
O B:THR238 3.1 68.0 1.0
O A:THR129 3.2 70.9 1.0
C A:VAL239 3.4 72.9 1.0
C A:ILE130 3.5 72.7 1.0
C B:ILE130 3.6 79.0 1.0
C B:VAL239 3.6 75.5 1.0
K A:K314 3.8 21.4 1.0
CA A:ILE130 3.8 71.1 1.0
CA A:VAL239 4.1 72.6 1.0
CA B:ILE130 4.1 79.4 1.0
C B:THR129 4.1 73.4 1.0
C A:THR238 4.1 70.1 1.0
C A:THR129 4.2 70.6 1.0
N A:GLY240 4.2 72.5 1.0
C B:THR238 4.2 78.9 1.0
CA B:VAL239 4.3 76.4 1.0
N B:GLY240 4.4 83.1 1.0
N A:ILE130 4.5 70.6 1.0
N B:ILE130 4.6 77.8 1.0
N A:VAL239 4.6 71.2 1.0
N B:GLY131 4.6 85.7 1.0
CA A:GLY240 4.6 73.2 1.0
N A:GLY131 4.6 76.4 1.0
N B:VAL239 4.7 77.6 1.0
CA B:GLY240 4.8 97.5 1.0
O A:GLY240 4.9 85.0 1.0
C A:GLY240 4.9 80.4 1.0
CA B:GLY131 5.0 91.1 1.0
CG2 A:ILE130 5.0 71.2 1.0
O B:GLY131 5.0 91.8 1.0

Potassium binding site 5 out of 5 in 3um7

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Potassium binding site 5 out of 5 in the Crystal Structure of the Human Two Pore Domain K+ Ion Channel Traak (K2P4.1)


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 Human Two Pore Domain K+ Ion Channel Traak (K2P4.1) within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K314

b:21.4
occ:1.00
 OG1 B:THR129 3.1 68.0 1.0
O A:THR238 3.1 70.2 1.0
O B:THR129 3.2 64.4 1.0
OG1 A:THR238 3.2 68.1 1.0
OG1 B:THR238 3.3 69.0 1.0
O A:THR129 3.3 70.9 1.0
O B:THR238 3.4 68.0 1.0
OG1 A:THR129 3.4 68.4 1.0
CB B:THR129 3.6 74.5 1.0
CB A:THR238 3.8 68.3 1.0
K A:K313 3.8 21.7 1.0
CB A:THR129 3.9 69.6 1.0
C B:THR129 3.9 73.4 1.0
CB B:THR238 4.0 78.5 1.0
C A:THR238 4.0 70.1 1.0
C A:THR129 4.1 70.6 1.0
C B:THR238 4.2 78.9 1.0
CA B:THR129 4.5 74.6 1.0
CA A:THR238 4.6 69.2 1.0
CA A:THR129 4.7 70.5 1.0
N B:ILE130 4.7 77.8 1.0
O A:THR237 4.8 69.7 1.0
CG2 B:THR129 4.8 76.1 1.0
CA B:THR238 4.8 82.8 1.0
N A:ILE130 4.8 70.6 1.0
N A:VAL239 4.8 71.2 1.0
O B:THR128 4.9 71.7 1.0
CG2 A:THR238 4.9 67.7 1.0

Reference:

S.G.Brohawn, J.Del Marmol, R.Mackinnon. Crystal Structure of the Human K2P Traak, A Lipid- and Mechano-Sensitive K+ Ion Channel. Science V. 335 436 2012.
ISSN: ISSN 0036-8075
PubMed: 22282805
DOI: 10.1126/SCIENCE.1213808
Page generated: Sat Aug 9 06:00:48 2025

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