Thallium in PDB 1r3k: Potassium Channel Kcsa-Fab Complex in Low Concentration of Tl+

The structure of Potassium Channel Kcsa-Fab Complex in Low Concentration of Tl+, PDB code: 1r3k was solved by Y.Zhou, R.Mackinnon, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	29.74 / 2.80
Space group	I 4
Cell size a, b, c (Å), α, β, γ (°)	154.180, 154.180, 75.050, 90.00, 90.00, 90.00
R / Rfree (%)	23.8 / 27.3

The binding sites of Thallium atom in the Potassium Channel Kcsa-Fab Complex in Low Concentration of Tl+ (pdb code 1r3k). This binding sites where shown within 5.0 Angstroms radius around Thallium atom.
In total 3 binding sites of Thallium where determined in the Potassium Channel Kcsa-Fab Complex in Low Concentration of Tl+, PDB code: 1r3k:
Jump to Thallium binding site number: 1; 2; 3;

Thallium binding site 1 out of 3 in the Potassium Channel Kcsa-Fab Complex in Low Concentration of Tl+


Mono view


Stereo pair view

A full contact list of Thallium with other atoms in the Tl binding site number 1 of Potassium Channel Kcsa-Fab Complex in Low Concentration of Tl+ within 5.0Å range: probe atom residue distance (Å) B Occ C:Tl301 b:46.5 occ:0.40 O C:TYR78 3.7 41.1 1.0 C C:TYR78 3.8 40.2 1.0 N C:GLY79 4.0 38.9 1.0 O C:GLY77 4.1 51.2 1.0 CA C:GLY79 4.1 37.1 1.0 CA C:TYR78 4.5 41.2 1.0 C C:GLY77 4.6 49.7 1.0 N C:TYR78 4.8 45.7 1.0

Thallium binding site 2 out of 3 in the Potassium Channel Kcsa-Fab Complex in Low Concentration of Tl+


Mono view


Stereo pair view

A full contact list of Thallium with other atoms in the Tl binding site number 2 of Potassium Channel Kcsa-Fab Complex in Low Concentration of Tl+ within 5.0Å range: probe atom residue distance (Å) B Occ C:Tl302 b:55.9 occ:0.40 O C:THR75 3.0 51.4 1.0 OG1 C:THR75 3.3 47.2 1.0 CB C:THR75 3.7 45.0 1.0 C C:THR75 4.0 46.1 1.0 CA C:THR75 4.5 45.1 1.0 CG2 C:THR75 4.9 43.9 1.0 O C:THR74 4.9 38.4 1.0 N C:VAL76 5.0 45.1 1.0

Thallium binding site 3 out of 3 in the Potassium Channel Kcsa-Fab Complex in Low Concentration of Tl+


Mono view


Stereo pair view

A full contact list of Thallium with other atoms in the Tl binding site number 3 of Potassium Channel Kcsa-Fab Complex in Low Concentration of Tl+ within 5.0Å range:

Y.Zhou, R.Mackinnon. The Occupancy of Ions in the K+ Selectivity Filter: Charge Balance and Coupling of Ion Binding to A Protein Conformational Change Underlie High Conduction Rates J.Mol.Biol. V. 333 965 2003.
ISSN: ISSN 0022-2836
PubMed: 14583193
DOI: 10.1016/J.JMB.2003.09.022