Potassium in PDB 3ldc: High Resolution Open Mthk Pore Structure Crystallized in 100 Mm K+

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

Resolution Low / High (Å)	23.95 / 1.45
Space group	P 4 21 2
Cell size a, b, c (Å), α, β, γ (°)	63.811, 63.811, 44.050, 90.00, 90.00, 90.00
R / Rfree (%)	18.7 / 20.2

The binding sites of Potassium atom in the High Resolution Open Mthk Pore Structure Crystallized in 100 Mm K+ (pdb code 3ldc). 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+, PDB code: 3ldc:
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+


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+ within 5.0Å range: probe atom residue distance (Å) B Occ A:K1 b:19.9 occ:0.25 O A:TYR62 2.7 17.6 1.0 O A:GLY61 3.0 17.4 1.0 K A:K2 3.4 19.6 0.2 C A:TYR62 3.4 16.7 1.0 CA A:TYR62 4.0 17.5 1.0 C A:GLY61 4.1 17.9 1.0 N A:GLY63 4.2 17.3 1.0 N A:TYR62 4.5 17.9 1.0 CA A:GLY63 4.6 17.8 1.0 O A:HOH8 4.7 40.7 1.0

Potassium binding site 2 out of 5 in the High Resolution Open Mthk Pore Structure Crystallized in 100 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+ within 5.0Å range: probe atom residue distance (Å) B Occ A:K2 b:19.6 occ:0.25 O A:GLY61 2.7 17.4 1.0 O A:VAL60 2.8 16.6 1.0 K A:K3 3.1 18.9 0.2 K A:K1 3.4 19.9 0.2 C A:GLY61 3.5 17.9 1.0 CA A:GLY61 3.9 18.0 1.0 C A:VAL60 4.0 18.1 1.0 N A:TYR62 4.4 17.9 1.0 N A:GLY61 4.4 18.9 1.0 CA A:TYR62 4.8 17.5 1.0

Potassium binding site 3 out of 5 in the High Resolution Open Mthk Pore Structure Crystallized in 100 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+ within 5.0Å range: probe atom residue distance (Å) B Occ A:K3 b:18.9 occ:0.25 O A:THR59 2.7 17.9 1.0 O A:VAL60 2.9 16.6 1.0 K A:K2 3.1 19.6 0.2 K A:K4 3.4 19.0 0.2 C A:VAL60 3.6 18.1 1.0 C A:THR59 3.8 17.5 1.0 CA A:VAL60 4.1 17.7 1.0 N A:VAL60 4.4 17.2 1.0 N A:GLY61 4.5 18.9 1.0 CA A:GLY61 4.8 18.0 1.0

Potassium binding site 4 out of 5 in the High Resolution Open Mthk Pore Structure Crystallized in 100 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+ within 5.0Å range: probe atom residue distance (Å) B Occ A:K4 b:19.0 occ:0.25 OG1 A:THR59 2.8 20.0 1.0 O A:THR59 2.9 17.9 1.0 O A:HOH100 3.2 58.5 0.2 K A:K3 3.4 18.9 0.2 CB A:THR59 3.5 19.1 1.0 C A:THR59 3.8 17.5 1.0 CA A:THR59 4.3 17.9 1.0 CG2 A:THR59 4.7 20.6 1.0 N A:VAL60 4.9 17.2 1.0 O A:ALA58 5.0 18.9 1.0

Potassium binding site 5 out of 5 in the High Resolution Open Mthk Pore Structure Crystallized in 100 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+ within 5.0Å range: probe atom residue distance (Å) B Occ A:K5 b:85.5 occ:0.25 O A:HOH102 2.7 57.0 1.0 O A:HOH101 2.7 49.5 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