Potassium in PDB 3zrs: X-Ray Crystal Structure of A Kirbac Potassium Channel Highlights A Mechanism of Channel Opening at the Bundle-Crossing Gate.

The structure of X-Ray Crystal Structure of A Kirbac Potassium Channel Highlights A Mechanism of Channel Opening at the Bundle-Crossing Gate., PDB code: 3zrs was solved by V.N.Bavro, R.De Zorzi, M.R.Schmidt, J.R.C.Muniz, L.Zubcevic, M.S.P.Sansom, C.Venien-Bryan, S.J.Tucker, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	89.80 / 3.05
Space group	P 4 21 2
Cell size a, b, c (Å), α, β, γ (°)	106.240, 106.240, 89.800, 90.00, 90.00, 90.00
R / Rfree (%)	22.04 / 25.89

The structure of X-Ray Crystal Structure of A Kirbac Potassium Channel Highlights A Mechanism of Channel Opening at the Bundle-Crossing Gate. also contains other interesting chemical elements:

Chlorine

(Cl)

2 atoms

The binding sites of Potassium atom in the X-Ray Crystal Structure of A Kirbac Potassium Channel Highlights A Mechanism of Channel Opening at the Bundle-Crossing Gate. (pdb code 3zrs). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 5 binding sites of Potassium where determined in the X-Ray Crystal Structure of A Kirbac Potassium Channel Highlights A Mechanism of Channel Opening at the Bundle-Crossing Gate., PDB code: 3zrs:
Jump to Potassium binding site number: 1; 2; 3; 4; 5;

Potassium binding site 1 out of 5 in the X-Ray Crystal Structure of A Kirbac Potassium Channel Highlights A Mechanism of Channel Opening at the Bundle-Crossing Gate.


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of X-Ray Crystal Structure of A Kirbac Potassium Channel Highlights A Mechanism of Channel Opening at the Bundle-Crossing Gate. within 5.0Å range: probe atom residue distance (Å) B Occ A:K1303 b:26.3 occ:0.17 O A:TYR99 2.9 45.7 1.0 O A:GLY98 2.9 39.0 1.0 K A:K1304 3.4 33.2 0.2 C A:TYR99 3.5 45.4 1.0 C A:GLY98 4.1 39.2 1.0 CA A:TYR99 4.2 37.5 1.0 N A:GLY100 4.3 44.4 1.0 N A:TYR99 4.6 37.3 1.0 CA A:GLY100 4.6 45.3 1.0

Potassium binding site 2 out of 5 in the X-Ray Crystal Structure of A Kirbac Potassium Channel Highlights A Mechanism of Channel Opening at the Bundle-Crossing Gate.


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of X-Ray Crystal Structure of A Kirbac Potassium Channel Highlights A Mechanism of Channel Opening at the Bundle-Crossing Gate. within 5.0Å range: probe atom residue distance (Å) B Occ A:K1304 b:33.2 occ:0.20 O A:ILE97 2.6 37.5 1.0 O A:GLY98 2.7 39.0 1.0 K A:K1305 2.9 23.5 0.2 K A:K1303 3.4 26.3 0.2 C A:GLY98 3.6 39.2 1.0 C A:ILE97 3.8 37.7 1.0 CA A:GLY98 4.1 33.5 1.0 N A:GLY98 4.4 33.3 1.0 N A:TYR99 4.6 37.3 1.0

Potassium binding site 3 out of 5 in the X-Ray Crystal Structure of A Kirbac Potassium Channel Highlights A Mechanism of Channel Opening at the Bundle-Crossing Gate.


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 3 of X-Ray Crystal Structure of A Kirbac Potassium Channel Highlights A Mechanism of Channel Opening at the Bundle-Crossing Gate. within 5.0Å range: probe atom residue distance (Å) B Occ A:K1305 b:23.5 occ:0.25 O A:THR96 2.7 40.0 1.0 O A:ILE97 2.9 37.5 1.0 K A:K1304 2.9 33.2 0.2 K A:K1306 3.1 28.1 0.2 C A:ILE97 3.6 37.7 1.0 C A:THR96 3.8 39.6 1.0 CA A:ILE97 4.0 34.0 1.0 N A:ILE97 4.4 34.7 1.0 N A:GLY98 4.6 33.3 1.0 OG1 A:THR96 4.8 42.8 1.0 O A:GLY98 5.0 39.0 1.0

Potassium binding site 4 out of 5 in the X-Ray Crystal Structure of A Kirbac Potassium Channel Highlights A Mechanism of Channel Opening at the Bundle-Crossing Gate.


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 4 of X-Ray Crystal Structure of A Kirbac Potassium Channel Highlights A Mechanism of Channel Opening at the Bundle-Crossing Gate. within 5.0Å range: probe atom residue distance (Å) B Occ A:K1306 b:28.1 occ:0.20 O A:THR96 2.7 40.0 1.0 OG1 A:THR96 2.7 42.8 1.0 K A:K1305 3.1 23.5 0.2 C A:THR96 3.7 39.6 1.0 CB A:THR96 3.8 41.7 1.0 K A:K1307 4.0 83.2 0.2 CA A:THR96 4.4 36.1 1.0 O A:ALA95 4.7 45.2 1.0 N A:ILE97 4.8 34.7 1.0

Potassium binding site 5 out of 5 in the X-Ray Crystal Structure of A Kirbac Potassium Channel Highlights A Mechanism of Channel Opening at the Bundle-Crossing Gate.


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 5 of X-Ray Crystal Structure of A Kirbac Potassium Channel Highlights A Mechanism of Channel Opening at the Bundle-Crossing Gate. within 5.0Å range: probe atom residue distance (Å) B Occ A:K1307 b:83.2 occ:0.20 OG1 A:THR96 3.9 42.8 1.0 K A:K1306 4.0 28.1 0.2

V.N.Bavro, R.De Zorzi, M.R.Schmidt, J.R.C.Muniz, L.Zubcevic, M.S.P.Sansom, C.Venien-Bryan, S.J.Tucker. Structure of A Kirbac Potassium Channel with An Open Bundle Crossing Indicates A Mechanism of Channel Gating Nat.Struct.Mol.Biol. V. 19 158 2012.
ISSN: ISSN 1545-9993
PubMed: 22231399
DOI: 10.1038/NSMB.2208