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

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

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

Barium

(Ba)

4 atoms

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 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 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 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 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 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 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

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