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Potassium in PDB 8ctu: Crystal Structure of A K+ Selective Nak Mutant (NAK2K) at Room Temperature

Protein crystallography data

The structure of Crystal Structure of A K+ Selective Nak Mutant (NAK2K) at Room Temperature, PDB code: 8ctu was solved by B.Lee, K.I.White, M.A.Socolich, M.A.Klureza, R.Henning, V.Srajer, R.Ranganathan, D.Hekstra, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å) 48.73 / 1.65
Space group I 4
Cell size a, b, c (Å), α, β, γ (°) 68.914, 68.914, 90.324, 90, 90, 90
R / Rfree (%) 16.3 / 17.9

Potassium Binding Sites:

The binding sites of Potassium atom in the Crystal Structure of A K+ Selective Nak Mutant (NAK2K) at Room Temperature (pdb code 8ctu). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 8 binding sites of Potassium where determined in the Crystal Structure of A K+ Selective Nak Mutant (NAK2K) at Room Temperature, PDB code: 8ctu:
Jump to Potassium binding site number: 1; 2; 3; 4; 5; 6; 7; 8;

Potassium binding site 1 out of 8 in 8ctu

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Potassium binding site 1 out of 8 in the Crystal Structure of A K+ Selective Nak Mutant (NAK2K) at Room Temperature


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 A K+ Selective Nak Mutant (NAK2K) at Room Temperature within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K302

b:8.6
occ:0.18
 O A:TYR66 2.7 10.6 1.0
O A:GLY65 3.2 8.3 1.0
C A:TYR66 3.4 10.3 1.0
O A:HOH417 3.4 36.1 0.2
K A:K303 3.6 8.6 0.2
HA A:TYR66 3.6 10.8 1.0
HA3 A:GLY67 3.9 13.2 1.0
CA A:TYR66 4.0 9.0 1.0
N A:GLY67 4.2 9.9 1.0
C A:GLY65 4.3 7.8 1.0
CA A:GLY67 4.6 11.0 1.0
O A:HOH416 4.6 39.7 1.0
N A:TYR66 4.7 7.6 1.0
H A:GLY67 4.9 11.9 1.0

Potassium binding site 2 out of 8 in 8ctu

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Potassium binding site 2 out of 8 in the Crystal Structure of A K+ Selective Nak Mutant (NAK2K) at Room Temperature


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 A K+ Selective Nak Mutant (NAK2K) at Room Temperature within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K303

b:8.6
occ:0.23
 O A:GLY65 2.7 8.3 1.0
O A:VAL64 2.8 10.4 1.0
K A:K304 3.3 9.8 0.2
C A:GLY65 3.5 7.8 1.0
HA3 A:GLY65 3.5 11.8 1.0
K A:K302 3.6 8.6 0.2
CA A:GLY65 3.9 9.9 1.0
C A:VAL64 4.0 9.0 1.0
HA A:TYR66 4.2 10.8 1.0
N A:GLY65 4.4 8.9 1.0
N A:TYR66 4.4 7.6 1.0
CA A:TYR66 4.8 9.0 1.0
HA2 A:GLY65 4.8 11.8 1.0

Potassium binding site 3 out of 8 in 8ctu

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Potassium binding site 3 out of 8 in the Crystal Structure of A K+ Selective Nak Mutant (NAK2K) at Room Temperature


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 A K+ Selective Nak Mutant (NAK2K) at Room Temperature within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K304

b:9.8
occ:0.24
 O A:THR63 2.6 11.2 1.0
O A:VAL64 2.9 10.4 1.0
K A:K303 3.3 8.6 0.2
K A:K305 3.5 10.1 0.2
HA A:VAL64 3.6 11.9 1.0
C A:VAL64 3.6 9.0 1.0
C A:THR63 3.8 10.1 1.0
CA A:VAL64 4.0 9.9 1.0
HA3 A:GLY65 4.3 11.8 1.0
N A:VAL64 4.4 10.0 1.0
HB A:THR63 4.5 12.3 1.0
N A:GLY65 4.5 8.9 1.0
CA A:GLY65 4.9 9.9 1.0
CA A:THR63 5.0 9.7 1.0

Potassium binding site 4 out of 8 in 8ctu

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Potassium binding site 4 out of 8 in the Crystal Structure of A K+ Selective Nak Mutant (NAK2K) at Room Temperature


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 A K+ Selective Nak Mutant (NAK2K) at Room Temperature within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K305

b:10.1
occ:0.21
 OG1 A:THR63 2.7 11.4 1.0
O A:THR63 3.1 11.2 1.0
HB A:THR63 3.1 12.3 1.0
HG1 A:THR63 3.4 13.7 1.0
CB A:THR63 3.5 10.3 1.0
K A:K304 3.5 9.8 0.2
C A:THR63 3.9 10.1 1.0
CA A:THR63 4.3 9.7 1.0
HG23 A:THR63 4.6 18.8 1.0
CG2 A:THR63 4.7 15.6 1.0
HA A:VAL64 4.7 11.9 1.0
HA A:THR63 4.9 11.7 1.0
N A:VAL64 4.9 10.0 1.0

Potassium binding site 5 out of 8 in 8ctu

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Potassium binding site 5 out of 8 in the Crystal Structure of A K+ Selective Nak Mutant (NAK2K) at Room Temperature


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 A K+ Selective Nak Mutant (NAK2K) at Room Temperature within 5.0Å range:
probe atom residue distance (Å) B Occ
B:K206

b:15.3
occ:0.18
 O B:TYR66 2.7 18.2 1.0
O B:GLY65 3.2 14.3 1.0
C B:TYR66 3.4 18.9 1.0
K B:K207 3.6 13.6 0.2
HA B:TYR66 3.7 19.1 1.0
HA3 B:GLY67 3.8 23.1 1.0
CA B:TYR66 4.1 15.9 1.0
N B:GLY67 4.2 17.6 1.0
C B:GLY65 4.3 13.6 1.0
CA B:GLY67 4.5 19.3 1.0
N B:TYR66 4.7 17.0 1.0
H B:GLY67 4.9 21.1 1.0

Potassium binding site 6 out of 8 in 8ctu

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Potassium binding site 6 out of 8 in the Crystal Structure of A K+ Selective Nak Mutant (NAK2K) at Room Temperature


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 A K+ Selective Nak Mutant (NAK2K) at Room Temperature within 5.0Å range:
probe atom residue distance (Å) B Occ
B:K207

b:13.6
occ:0.22
 O B:GLY65 2.7 14.3 1.0
O B:VAL64 2.9 13.8 1.0
K B:K208 3.3 11.9 0.2
C B:GLY65 3.5 13.6 1.0
HA3 B:GLY65 3.6 17.0 1.0
K B:K206 3.6 15.3 0.2
CA B:GLY65 4.0 14.2 1.0
C B:VAL64 4.0 12.4 1.0
HA B:TYR66 4.3 19.1 1.0
N B:TYR66 4.4 17.0 1.0
N B:GLY65 4.4 14.6 1.0
CA B:TYR66 4.8 15.9 1.0
HA2 B:GLY65 4.8 17.0 1.0

Potassium binding site 7 out of 8 in 8ctu

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Potassium binding site 7 out of 8 in the Crystal Structure of A K+ Selective Nak Mutant (NAK2K) at Room Temperature


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 A K+ Selective Nak Mutant (NAK2K) at Room Temperature within 5.0Å range:
probe atom residue distance (Å) B Occ
B:K208

b:11.9
occ:0.22
 O B:THR63 2.6 12.8 1.0
O B:VAL64 2.9 13.8 1.0
K B:K207 3.3 13.6 0.2
K B:K209 3.5 11.3 0.2
HA B:VAL64 3.6 12.9 1.0
C B:VAL64 3.6 12.4 1.0
C B:THR63 3.8 12.6 1.0
CA B:VAL64 4.0 10.8 1.0
HA3 B:GLY65 4.4 17.0 1.0
N B:VAL64 4.4 12.3 1.0
N B:GLY65 4.5 14.6 1.0
HB B:THR63 4.5 11.9 1.0
CA B:GLY65 4.9 14.2 1.0
CA B:THR63 4.9 10.3 1.0

Potassium binding site 8 out of 8 in 8ctu

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Potassium binding site 8 out of 8 in the Crystal Structure of A K+ Selective Nak Mutant (NAK2K) at Room Temperature


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 A K+ Selective Nak Mutant (NAK2K) at Room Temperature within 5.0Å range:
probe atom residue distance (Å) B Occ
B:K209

b:11.3
occ:0.22
 OG1 B:THR63 2.7 14.0 1.0
O B:THR63 3.0 12.8 1.0
HB B:THR63 3.1 11.9 1.0
HG1 B:THR63 3.4 16.9 1.0
CB B:THR63 3.5 9.9 1.0
K B:K208 3.5 11.9 0.2
C B:THR63 3.9 12.6 1.0
CA B:THR63 4.3 10.3 1.0
HG21 B:THR63 4.6 17.2 1.0
CG2 B:THR63 4.7 14.3 1.0
HA B:VAL64 4.7 12.9 1.0
HA B:THR63 4.9 12.4 1.0
N B:VAL64 4.9 12.3 1.0

Reference:

B.Lee, K.I.White, M.A.Socolich, M.A.Klureza, R.Henning, V.Srajer, R.Ranganathan, D.Hekstra. Direct Visualization of Electric Field-Stimulated Ion Conduction in A Potassium Channel To Be Published.
Page generated: Sat Aug 9 16:31:49 2025

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