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Potassium in PDB 7sk0: TWIK1 in MSP1D1 Lipid Nanodisc at pH 7.4

Potassium Binding Sites:

The binding sites of Potassium atom in the TWIK1 in MSP1D1 Lipid Nanodisc at pH 7.4 (pdb code 7sk0). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 5 binding sites of Potassium where determined in the TWIK1 in MSP1D1 Lipid Nanodisc at pH 7.4, PDB code: 7sk0:
Jump to Potassium binding site number: 1; 2; 3; 4; 5;

Potassium binding site 1 out of 5 in 7sk0

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Potassium binding site 1 out of 5 in the TWIK1 in MSP1D1 Lipid Nanodisc at pH 7.4


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of TWIK1 in MSP1D1 Lipid Nanodisc at pH 7.4 within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K402

b:33.0
occ:1.00
 O A:GLY119 2.8 50.4 1.0
O B:GLY119 2.8 50.2 1.0
O B:THR118 2.8 51.4 1.0
O A:THR118 2.8 51.8 1.0
K A:K405 2.8 34.7 1.0
K A:K406 2.9 61.0 1.0
O A:GLY227 2.9 51.7 1.0
O A:ILE226 2.9 52.1 1.0
O B:ILE226 3.0 52.1 1.0
O B:GLY227 3.0 52.3 1.0
C A:GLY227 3.6 51.7 1.0
C B:GLY119 3.6 50.2 1.0
C A:GLY119 3.6 50.4 1.0
C B:GLY227 3.7 52.3 1.0
C B:THR118 3.9 51.4 1.0
C A:THR118 3.9 51.8 1.0
C A:ILE226 4.0 52.1 1.0
CA B:GLY119 4.1 50.2 1.0
CA A:GLY119 4.1 50.4 1.0
C B:ILE226 4.1 52.1 1.0
CA A:GLY227 4.1 51.7 1.0
CA B:GLY227 4.2 52.3 1.0
N B:GLY119 4.5 50.2 1.0
N A:GLY119 4.5 50.4 1.0
N A:LEU228 4.5 53.5 1.0
N A:GLY227 4.6 51.7 1.0
N B:LEU228 4.6 54.1 1.0
N B:GLY227 4.6 52.3 1.0
N A:TYR120 4.6 55.8 1.0
N B:TYR120 4.6 56.4 1.0
O B:THR117 4.7 53.9 1.0
O A:THR117 4.7 54.5 1.0
CA A:LEU228 4.8 53.5 1.0
CA B:LEU228 4.9 54.1 1.0
CA A:TYR120 5.0 55.8 1.0

Potassium binding site 2 out of 5 in 7sk0

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Potassium binding site 2 out of 5 in the TWIK1 in MSP1D1 Lipid Nanodisc at pH 7.4


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of TWIK1 in MSP1D1 Lipid Nanodisc at pH 7.4 within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K403

b:77.3
occ:1.00
 O A:TYR120 3.5 55.8 1.0
O B:TYR120 3.5 56.4 1.0
K A:K406 3.6 61.0 1.0
O A:LEU228 3.7 53.5 1.0
O B:LEU228 3.7 54.1 1.0
CA A:GLY121 4.3 53.7 1.0
CA B:GLY121 4.3 53.8 1.0
C A:TYR120 4.5 55.8 1.0
C B:TYR120 4.5 56.4 1.0
C A:GLY121 4.8 53.7 1.0
C B:GLY121 4.8 53.8 1.0
C A:LEU228 4.8 53.5 1.0
C B:LEU228 4.8 54.1 1.0
CA A:GLY229 4.8 59.9 1.0
N A:GLY121 4.9 53.7 1.0
N B:GLY121 4.9 53.8 1.0
CA B:GLY229 4.9 60.9 1.0
O A:GLY121 4.9 53.7 1.0
O B:GLY121 4.9 53.8 1.0

Potassium binding site 3 out of 5 in 7sk0

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Potassium binding site 3 out of 5 in the TWIK1 in MSP1D1 Lipid Nanodisc at pH 7.4


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 3 of TWIK1 in MSP1D1 Lipid Nanodisc at pH 7.4 within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K404

b:53.7
occ:1.00
 K A:K405 2.9 34.7 1.0
O A:THR225 3.0 57.9 1.0
O A:THR117 3.0 54.5 1.0
O B:THR225 3.0 57.9 1.0
O B:THR117 3.1 53.9 1.0
OG1 B:THR117 3.2 53.9 1.0
OG1 A:THR117 3.2 54.5 1.0
CB B:THR117 3.4 53.9 1.0
CB A:THR117 3.4 54.5 1.0
OG1 A:THR225 3.6 57.9 1.0
OG1 B:THR225 3.6 57.9 1.0
C A:THR117 3.7 54.5 1.0
C B:THR117 3.7 53.9 1.0
CB A:THR225 3.8 57.9 1.0
CB B:THR225 3.9 57.9 1.0
C A:THR225 3.9 57.9 1.0
C B:THR225 4.0 57.9 1.0
CA B:THR117 4.2 53.9 1.0
CA A:THR117 4.2 54.5 1.0
N A:THR118 4.5 51.8 1.0
N B:THR118 4.5 51.4 1.0
CA A:THR225 4.5 57.9 1.0
CG2 B:THR117 4.5 53.9 1.0
CG2 A:THR117 4.6 54.5 1.0
CA B:THR225 4.6 57.9 1.0
N A:ILE226 4.8 52.1 1.0
CA A:THR118 4.8 51.8 1.0
CA B:THR118 4.8 51.4 1.0
N B:ILE226 4.8 52.1 1.0
CA A:ILE226 4.9 52.1 1.0
CA B:ILE226 4.9 52.1 1.0
O A:THR118 5.0 51.8 1.0

Potassium binding site 4 out of 5 in 7sk0

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Potassium binding site 4 out of 5 in the TWIK1 in MSP1D1 Lipid Nanodisc at pH 7.4


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 4 of TWIK1 in MSP1D1 Lipid Nanodisc at pH 7.4 within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K405

b:34.7
occ:1.00
 O B:THR117 2.7 53.9 1.0
O A:THR117 2.7 54.5 1.0
K A:K402 2.8 33.0 1.0
O A:THR118 2.8 51.8 1.0
O B:THR118 2.9 51.4 1.0
K A:K404 2.9 53.7 1.0
O A:ILE226 2.9 52.1 1.0
O B:ILE226 3.0 52.1 1.0
O B:THR225 3.1 57.9 1.0
O A:THR225 3.1 57.9 1.0
C A:THR118 3.6 51.8 1.0
C B:THR118 3.6 51.4 1.0
C A:ILE226 3.6 52.1 1.0
C B:ILE226 3.7 52.1 1.0
C B:THR117 3.9 53.9 1.0
C A:THR117 3.9 54.5 1.0
CA A:THR118 4.0 51.8 1.0
CA B:THR118 4.1 51.4 1.0
CA A:ILE226 4.2 52.1 1.0
CA B:ILE226 4.2 52.1 1.0
C A:THR225 4.3 57.9 1.0
C B:THR225 4.3 57.9 1.0
N A:THR118 4.4 51.8 1.0
N B:THR118 4.4 51.4 1.0
N A:GLY119 4.5 50.4 1.0
N A:GLY227 4.5 51.7 1.0
N B:GLY119 4.5 50.2 1.0
N B:GLY227 4.5 52.3 1.0
CA A:GLY227 4.7 51.7 1.0
CA B:GLY227 4.7 52.3 1.0
N A:ILE226 4.8 52.1 1.0
N B:ILE226 4.8 52.1 1.0
CA A:GLY119 4.8 50.4 1.0
CA B:GLY119 4.8 50.2 1.0
O A:GLY119 4.8 50.4 1.0
O A:GLY227 4.9 51.7 1.0
O B:GLY119 4.9 50.2 1.0
O B:GLY227 4.9 52.3 1.0

Potassium binding site 5 out of 5 in 7sk0

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Potassium binding site 5 out of 5 in the TWIK1 in MSP1D1 Lipid Nanodisc at pH 7.4


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 5 of TWIK1 in MSP1D1 Lipid Nanodisc at pH 7.4 within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K406

b:61.0
occ:1.00
 O A:GLY119 2.8 50.4 1.0
O B:GLY119 2.8 50.2 1.0
K A:K402 2.9 33.0 1.0
O A:GLY227 3.0 51.7 1.0
O B:GLY227 3.0 52.3 1.0
O A:TYR120 3.3 55.8 1.0
O B:TYR120 3.4 56.4 1.0
O A:LEU228 3.4 53.5 1.0
O B:LEU228 3.5 54.1 1.0
K A:K403 3.6 77.3 1.0
C A:TYR120 3.7 55.8 1.0
C B:TYR120 3.8 56.4 1.0
C A:LEU228 3.9 53.5 1.0
C B:LEU228 3.9 54.1 1.0
C A:GLY119 4.0 50.4 1.0
C B:GLY119 4.0 50.2 1.0
C A:GLY227 4.1 51.7 1.0
C B:GLY227 4.2 52.3 1.0
CA A:TYR120 4.2 55.8 1.0
N A:GLY121 4.3 53.7 1.0
CA A:LEU228 4.3 53.5 1.0
CA B:TYR120 4.3 56.4 1.0
CA B:LEU228 4.3 54.1 1.0
N B:GLY121 4.3 53.8 1.0
N A:GLY229 4.6 59.9 1.0
CA A:GLY121 4.6 53.7 1.0
N A:TYR120 4.6 55.8 1.0
CA B:GLY121 4.6 53.8 1.0
N B:TYR120 4.6 56.4 1.0
N B:GLY229 4.7 60.9 1.0
N A:LEU228 4.7 53.5 1.0
N B:LEU228 4.7 54.1 1.0
O B:THR118 4.9 51.4 1.0
O A:THR118 4.9 51.8 1.0
CA A:GLY229 4.9 59.9 1.0

Reference:

T.S.Turney, V.Li, S.G.Brohawn. Structural Basis For pH-Gating of the K + Channel TWIK1 at the Selectivity Filter Biorxiv 2021.
DOI: 10.1101/2021.11.09.467928
Page generated: Mon Aug 12 21:09:14 2024

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