Potassium in the structure of Potassium Channel Kcsa-Fab Complex With Tetrabutylammonium (Tba) (pdb 2hjf)

The binding sites of Potassium atom in the structure of Potassium Channel Kcsa-Fab Complex With Tetrabutylammonium (Tba) (pdb code 2hjf). This binding sites where shown with 5.0 Angstroms radius around Potassium atom. The 2hjf structure was solved by J.D.FARALDO-GOMEZ, E.KUTLUAY, V.JOGINI, Y.ZHAO, L.HEGINBOTHAM, B.ROUX, with X-Ray Crystallography technique, brief refinement statistics is given in the table below: Resolution (A) 50.0-2.9 Space group I4 a (A) 156.200 b (A) 156.200 c (A) 76.316 alpha (°) 90.00 beta (°) 90.00 gamma (°) 90.00 Rfactor (%) 22.5 Rfree (%) 28.4 Potassium Binding Sites: Potassium binding site 1 out of 4 in 2hjf Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 1 of Potassium in the PDB 2hjf. Coordination sphere was calculated for all residues within 5.0 Angstroms distance from the central Potassium atom, shown by VdW sphere Residues shown as a stick model or VDW spheres: C: Gly77, C: Tyr78, C: Gly79, C: K3002, conact list: Atom Atom Distance (A) K O C:Gly77 3.85 K C C:Gly77 4.87 K O C:Tyr78 3.24 K C C:Tyr78 3.71 K CA C:Tyr78 4.26 K N C:Gly79 4.39 K CA C:Gly79 4.63 K K C:K3002 3.40 interactive model: Potassium binding site 2 out of 4 in 2hjf Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 2 of Potassium in the PDB 2hjf. Coordination sphere was calculated for all residues within 5.0 Angstroms distance from the central Potassium atom, shown by VdW sphere Residues shown as a stick model or VDW spheres: C: Val76, C: Gly77, C: K3001, C: K3003, conact list: Atom Atom Distance (A) K O C:Val76 3.27 K C C:Val76 4.45 K O C:Gly77 3.22 K C C:Gly77 4.24 K K C:K3001 3.40 K K C:K3003 3.21 interactive model: Potassium binding site 3 out of 4 in 2hjf Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 3 of Potassium in the PDB 2hjf. Coordination sphere was calculated for all residues within 5.0 Angstroms distance from the central Potassium atom, shown by VdW sphere Residues shown as a stick model or VDW spheres: C: Thr75, C: Val76, C: K3002, C: K3004, conact list: Atom Atom Distance (A) K O C:Thr75 3.15 K C C:Thr75 4.25 K O C:Val76 3.17 K N C:Val76 4.71 K C C:Val76 4.02 K CA C:Val76 4.13 K K C:K3002 3.21 K K C:K3004 3.34 interactive model: Potassium binding site 4 out of 4 in 2hjf Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 4 of Potassium in the PDB 2hjf. Coordination sphere was calculated for all residues within 5.0 Angstroms distance from the central Potassium atom, shown by VdW sphere Residues shown as a stick model or VDW spheres: C: Thr75, C: Val76, C: K3003, C: Tba1, conact list: Atom Atom Distance (A) K O C:Thr75 3.39 K CB C:Thr75 3.77 K CG2 C:Thr75 4.92 K OG1 C:Thr75 3.35 K C C:Thr75 4.13 K CA C:Thr75 4.67 K N C:Val76 4.96 K K C:K3003 3.34 K C11 C:Tba1 4.08 K C41 C:Tba1 4.37 K N1 C:Tba1 4.94 K C42 C:Tba1 4.79 interactive model: