Potassium in PDB 3ldd: High Resolution Open Mthk Pore Structure Crystallized in 100 Mm K+ and Further Soaked in 99 Mm Na+/1 Mm K+.

The structure of High Resolution Open Mthk Pore Structure Crystallized in 100 Mm K+ and Further Soaked in 99 Mm Na+/1 Mm K+., PDB code: 3ldd was solved by S.Ye, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	25.70 / 1.45
Space group	P 4 21 2
Cell size a, b, c (Å), α, β, γ (°)	63.323, 63.323, 44.008, 90.00, 90.00, 90.00
R / Rfree (%)	19.1 / 21.6

The binding sites of Potassium atom in the High Resolution Open Mthk Pore Structure Crystallized in 100 Mm K+ and Further Soaked in 99 Mm Na+/1 Mm K+. (pdb code 3ldd). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 5 binding sites of Potassium where determined in the High Resolution Open Mthk Pore Structure Crystallized in 100 Mm K+ and Further Soaked in 99 Mm Na+/1 Mm K+., PDB code: 3ldd:
Jump to Potassium binding site number: 1; 2; 3; 4; 5;

Potassium binding site 1 out of 5 in the High Resolution Open Mthk Pore Structure Crystallized in 100 Mm K+ and Further Soaked in 99 Mm Na+/1 Mm K+.


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of High Resolution Open Mthk Pore Structure Crystallized in 100 Mm K+ and Further Soaked in 99 Mm Na+/1 Mm K+. within 5.0Å range: probe atom residue distance (Å) B Occ A:K1 b:27.1 occ:0.25 O A:GLY61 2.8 21.5 1.0 O A:TYR62 2.8 21.2 1.0 K A:K2 3.0 30.2 0.2 C A:TYR62 3.5 20.3 1.0 CA A:TYR62 3.9 20.8 1.0 C A:GLY61 4.0 21.0 1.0 N A:GLY63 4.3 20.8 1.0 N A:TYR62 4.4 20.7 1.0 CA A:GLY63 4.7 21.1 1.0 O A:HOH7 4.8 39.3 1.0

Potassium binding site 2 out of 5 in the High Resolution Open Mthk Pore Structure Crystallized in 100 Mm K+ and Further Soaked in 99 Mm Na+/1 Mm K+.


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of High Resolution Open Mthk Pore Structure Crystallized in 100 Mm K+ and Further Soaked in 99 Mm Na+/1 Mm K+. within 5.0Å range: probe atom residue distance (Å) B Occ A:K2 b:30.2 occ:0.25 O A:GLY61 2.8 21.5 1.0 O A:VAL60 2.9 20.8 1.0 K A:K3 2.9 26.2 0.2 K A:K1 3.0 27.1 0.2 C A:GLY61 3.5 21.0 1.0 CA A:GLY61 4.0 20.8 1.0 C A:VAL60 4.0 20.8 1.0 N A:TYR62 4.4 20.7 1.0 N A:GLY61 4.5 21.4 1.0 CA A:TYR62 4.7 20.8 1.0

Potassium binding site 3 out of 5 in the High Resolution Open Mthk Pore Structure Crystallized in 100 Mm K+ and Further Soaked in 99 Mm Na+/1 Mm K+.


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 3 of High Resolution Open Mthk Pore Structure Crystallized in 100 Mm K+ and Further Soaked in 99 Mm Na+/1 Mm K+. within 5.0Å range: probe atom residue distance (Å) B Occ A:K3 b:26.2 occ:0.25 O A:THR59 2.8 21.4 1.0 O A:VAL60 2.8 20.8 1.0 K A:K2 2.9 30.2 0.2 K A:K4 3.5 26.4 0.2 C A:VAL60 3.6 20.8 1.0 C A:THR59 3.9 21.2 1.0 CA A:VAL60 4.1 21.0 1.0 N A:GLY61 4.5 21.4 1.0 N A:VAL60 4.5 20.9 1.0 CA A:GLY61 4.7 20.8 1.0 O A:GLY61 4.9 21.5 1.0

Potassium binding site 4 out of 5 in the High Resolution Open Mthk Pore Structure Crystallized in 100 Mm K+ and Further Soaked in 99 Mm Na+/1 Mm K+.


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 4 of High Resolution Open Mthk Pore Structure Crystallized in 100 Mm K+ and Further Soaked in 99 Mm Na+/1 Mm K+. within 5.0Å range: probe atom residue distance (Å) B Occ A:K4 b:26.4 occ:0.25 OG1 A:THR59 2.7 24.7 1.0 O A:THR59 2.9 21.4 1.0 K A:K3 3.5 26.2 0.2 CB A:THR59 3.5 22.2 1.0 C A:THR59 3.8 21.2 1.0 CA A:THR59 4.3 22.0 1.0 CG2 A:THR59 4.7 24.8 1.0 N A:VAL60 4.8 20.9 1.0 O A:ALA58 5.0 22.5 1.0

Potassium binding site 5 out of 5 in the High Resolution Open Mthk Pore Structure Crystallized in 100 Mm K+ and Further Soaked in 99 Mm Na+/1 Mm K+.


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 5 of High Resolution Open Mthk Pore Structure Crystallized in 100 Mm K+ and Further Soaked in 99 Mm Na+/1 Mm K+. within 5.0Å range: probe atom residue distance (Å) B Occ A:K5 b:0.3 occ:0.25 O A:HOH100 2.8 46.9 1.0

S.Ye, Y.Li, Y.Jiang. Novel Insights Into K(+) Selectivity From High-Resolution Structures of An Open K(+) Channel Pore. Nat.Struct.Mol.Biol. V. 17 1019 2010.
ISSN: ISSN 1545-9993
PubMed: 20676101
DOI: 10.1038/NSMB.1865