Potassium in PDB 6v8y: Structure of A Sodium Potassium Ion Channel

The structure of Structure of A Sodium Potassium Ion Channel, PDB code: 6v8y was solved by R.Roy, K.L.Weiss, L.Coates, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	38.32 / 1.53
Space group	C 2 2 21
Cell size a, b, c (Å), α, β, γ (°)	81.716, 88.137, 49.848, 90, 90, 90
R / Rfree (%)	15.7 / 17.8

The structure of Structure of A Sodium Potassium Ion Channel also contains other interesting chemical elements:

Sodium

(Na)

2 atoms

The binding sites of Potassium atom in the Structure of A Sodium Potassium Ion Channel (pdb code 6v8y). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 3 binding sites of Potassium where determined in the Structure of A Sodium Potassium Ion Channel, PDB code: 6v8y:
Jump to Potassium binding site number: 1; 2; 3;

Potassium binding site 1 out of 3 in the Structure of A Sodium Potassium Ion Channel


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Structure of A Sodium Potassium Ion Channel within 5.0Å range: probe atom residue distance (Å) B Occ A:K406 b:14.9 occ:0.50 OG1 A:THR63 2.8 16.4 1.0 OG1 B:THR63 2.8 16.6 1.0 O A:THR63 2.9 14.0 1.0 O B:THR63 2.9 14.1 1.0 HB A:THR63 3.0 20.4 1.0 HB B:THR63 3.0 20.8 1.0 CB A:THR63 3.4 17.0 1.0 CB B:THR63 3.4 17.3 1.0 HG1 A:THR63 3.5 19.7 1.0 HG1 B:THR63 3.5 19.9 1.0 K A:K407 3.6 13.9 0.5 C A:THR63 3.7 13.8 1.0 C B:THR63 3.7 15.3 1.0 CA A:THR63 4.2 14.6 1.0 CA B:THR63 4.3 15.9 1.0 HA B:VAL64 4.5 19.0 1.0 HA A:VAL64 4.5 17.6 1.0 HG21 A:THR63 4.6 21.5 1.0 CG2 A:THR63 4.6 17.9 1.0 HG21 B:THR63 4.7 22.3 1.0 N B:VAL64 4.7 14.4 1.0 N A:VAL64 4.7 14.2 1.0 HA A:THR63 4.7 17.5 1.0 CG2 B:THR63 4.7 18.5 1.0 HA B:THR63 4.8 19.0 1.0

Potassium binding site 2 out of 3 in the Structure of A Sodium Potassium Ion Channel


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of Structure of A Sodium Potassium Ion Channel within 5.0Å range: probe atom residue distance (Å) B Occ A:K407 b:13.9 occ:0.50 O A:THR63 2.8 14.0 1.0 O B:THR63 2.9 14.1 1.0 O B:VAL64 2.9 16.4 1.0 NA A:NA408 2.9 47.9 0.4 O A:VAL64 3.0 16.8 1.0 C B:VAL64 3.6 15.5 1.0 K A:K406 3.6 14.9 0.5 C A:VAL64 3.6 18.2 1.0 HA B:VAL64 3.7 19.0 1.0 HA A:VAL64 3.8 17.6 1.0 C A:THR63 4.0 13.8 1.0 C B:THR63 4.0 15.3 1.0 HA3 A:GLY65 4.1 17.4 1.0 CA B:VAL64 4.2 15.9 1.0 CA A:VAL64 4.2 14.7 1.0 HA3 B:GLY65 4.2 20.6 1.0 N A:GLY65 4.4 13.3 1.0 N B:GLY65 4.4 15.4 1.0 N B:VAL64 4.6 14.4 1.0 N A:VAL64 4.6 14.2 1.0 HB A:THR63 4.7 20.4 1.0 CA A:GLY65 4.8 14.5 1.0 HB B:THR63 4.8 20.8 1.0 O A:HOH524 4.8 27.9 1.0 CA B:GLY65 4.8 17.1 1.0 O B:HOH327 4.9 27.9 1.0

Potassium binding site 3 out of 3 in the Structure of A Sodium Potassium Ion Channel


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 3 of Structure of A Sodium Potassium Ion Channel within 5.0Å range: probe atom residue distance (Å) B Occ B:K204 b:26.5 occ:0.34 O A:GLY67 2.5 38.2 1.0 O B:GLY67 2.6 41.4 0.5 O B:GLY67 2.6 26.0 0.5 O A:HOH504 2.8 52.6 1.0 O B:HOH304 2.9 50.1 1.0 C A:GLY67 3.6 37.0 1.0 HA3 A:GLY67 3.7 41.9 1.0 C B:GLY67 3.7 33.3 0.5 HA2 A:GLY67 3.8 41.9 1.0 C B:GLY67 3.8 23.9 0.5 HA B:ASN68 3.8 37.0 1.0 CA A:GLY67 3.9 34.9 1.0 HA2 B:GLY67 4.4 42.3 0.5 HA2 B:GLY67 4.4 32.3 0.5 HA A:ASN68 4.4 35.6 0.5 CA B:GLY67 4.5 35.2 0.5 HA A:ASN68 4.5 33.6 0.6 HA3 B:GLY67 4.6 42.3 0.5 CA B:ASN68 4.6 30.8 1.0 N B:ASN68 4.6 30.2 1.0 CA B:GLY67 4.7 26.9 0.5 N A:ASN68 4.7 28.2 0.5 N A:ASN68 4.7 28.1 0.6 OD1 B:ASN68 4.8 38.5 1.0 OD1 A:ASN68 4.9 24.3 0.6 HA3 B:GLY67 4.9 32.3 0.5

R.Roy, K.Hendriks, W.Kopec, S.Abdolvand, K.L.Weiss, B.L.De Groot, A.Lange, H.Sun, L.Coates. Structural Plasticity of the Selectivity Filter in A Nonselective Ion Channel Iucrj 2021.
ISSN: ESSN 2052-2525
DOI: 10.1107/S205225252100213X