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Potassium in PDB 3e8f: Crystal Structure of the the Open Nak Channel- K+/BA2+

Protein crystallography data

The structure of Crystal Structure of the the Open Nak Channel- K+/BA2+, PDB code: 3e8f was solved by Y.Jiang, A.Alam, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å) 28.88 / 2.00
Space group I 4
Cell size a, b, c (Å), α, β, γ (°) 68.226, 68.226, 89.548, 90.00, 90.00, 90.00
R / Rfree (%) 20.1 / 24.8

Other elements in 3e8f:

The structure of Crystal Structure of the the Open Nak Channel- K+/BA2+ also contains other interesting chemical elements:

Barium (Ba) 4 atoms

Potassium Binding Sites:

The binding sites of Potassium atom in the Crystal Structure of the the Open Nak Channel- K+/BA2+ (pdb code 3e8f). 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 the Open Nak Channel- K+/BA2+, PDB code: 3e8f:
Jump to Potassium binding site number: 1; 2; 3; 4; 5; 6;

Potassium binding site 1 out of 6 in 3e8f

Go back to Potassium Binding Sites List in 3e8f
Potassium binding site 1 out of 6 in the Crystal Structure of the the Open Nak Channel- K+/BA2+


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 the Open Nak Channel- K+/BA2+ within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K5

b:36.5
occ:0.25
 K A:K9 2.7 81.5 0.2
BA A:BA1 2.8 18.7 0.2
O A:VAL64 3.2 13.2 1.0
O A:HOH507 3.2 29.6 1.0
CA A:GLY65 4.0 15.1 1.0
C A:VAL64 4.2 16.8 1.0
C A:GLY65 4.5 19.0 1.0
N A:GLY65 4.6 14.3 1.0
O A:GLY65 4.8 20.1 1.0

Potassium binding site 2 out of 6 in 3e8f

Go back to Potassium Binding Sites List in 3e8f
Potassium binding site 2 out of 6 in the Crystal Structure of the the Open Nak Channel- K+/BA2+


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 the Open Nak Channel- K+/BA2+ within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K6

b:24.7
occ:0.25
 OG1 A:THR63 2.7 16.8 1.0
O A:THR63 3.0 19.1 1.0
CB A:THR63 3.4 20.9 1.0
C A:THR63 3.8 21.9 1.0
BA A:BA1 4.0 18.7 0.2
CA A:THR63 4.3 18.4 1.0
CG2 A:THR63 4.6 17.8 1.0
N A:VAL64 4.8 18.0 1.0
O A:THR62 5.0 20.2 1.0

Potassium binding site 3 out of 6 in 3e8f

Go back to Potassium Binding Sites List in 3e8f
Potassium binding site 3 out of 6 in the Crystal Structure of the the Open Nak Channel- K+/BA2+


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 the Open Nak Channel- K+/BA2+ within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K9

b:81.5
occ:0.25
 K A:K5 2.7 36.5 0.2
O A:HOH507 2.8 29.6 1.0
O A:ASP66 4.0 25.7 1.0
CA A:GLY67 4.1 25.2 1.0
C A:ASP66 4.3 25.8 1.0
N A:GLY67 4.4 26.9 1.0
C A:GLY65 4.9 19.0 1.0
N A:ASP66 4.9 22.1 1.0

Potassium binding site 4 out of 6 in 3e8f

Go back to Potassium Binding Sites List in 3e8f
Potassium binding site 4 out of 6 in the Crystal Structure of the the Open Nak Channel- K+/BA2+


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 the Open Nak Channel- K+/BA2+ within 5.0Å range:
probe atom residue distance (Å) B Occ
B:K7

b:27.7
occ:0.25
 OG1 B:THR63 2.8 24.0 1.0
O B:THR63 3.0 24.7 1.0
CB B:THR63 3.4 26.8 1.0
C B:THR63 3.8 27.1 1.0
BA B:BA2 3.8 29.7 0.2
CA B:THR63 4.2 28.4 1.0
CG2 B:THR63 4.6 23.4 1.0
N B:VAL64 4.7 30.0 1.0
O B:THR62 4.9 25.6 1.0

Potassium binding site 5 out of 6 in 3e8f

Go back to Potassium Binding Sites List in 3e8f
Potassium binding site 5 out of 6 in the Crystal Structure of the the Open Nak Channel- K+/BA2+


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 the Open Nak Channel- K+/BA2+ within 5.0Å range:
probe atom residue distance (Å) B Occ
B:K8

b:59.1
occ:0.25
 O B:HOH531 3.0 57.0 1.0
BA B:BA2 3.0 29.7 0.2
K B:K10 3.1 82.1 0.2
O B:VAL64 3.3 27.0 1.0
CA B:GLY65 4.1 36.5 1.0
C B:VAL64 4.3 30.0 1.0
C B:GLY65 4.5 41.5 1.0
N B:GLY65 4.7 32.2 1.0
O B:GLY65 4.8 40.1 1.0

Potassium binding site 6 out of 6 in 3e8f

Go back to Potassium Binding Sites List in 3e8f
Potassium binding site 6 out of 6 in the Crystal Structure of the the Open Nak Channel- K+/BA2+


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 the Open Nak Channel- K+/BA2+ within 5.0Å range:
probe atom residue distance (Å) B Occ
B:K10

b:82.1
occ:0.25
 O B:HOH531 2.9 57.0 1.0
K B:K8 3.1 59.1 0.2
CA B:GLY67 3.7 56.0 1.0
O B:ASP66 3.9 54.9 1.0
N B:GLY67 4.2 54.3 1.0
C B:ASP66 4.2 50.1 1.0
C B:GLY67 4.8 57.0 1.0

Reference:

A.Alam, Y.Jiang. Structural Analysis of Ion Selectivity in the Nak Channel Nat.Struct.Mol.Biol. V. 16 35 2009.
ISSN: ISSN 1545-9993
PubMed: 19098915
DOI: 10.1038/NSMB.1537
Page generated: Sat Aug 9 04:44:15 2025

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