Rubidium in the structure of Kcsa Potassium Channel In The Open-Conductive State With 20 A Opening At T112 in the Presence of Rb+ Ion (pdb 3fb8)

The binding sites of Rubidium atom in the structure of Kcsa Potassium Channel In The Open-Conductive State With 20 A Opening At T112 in the Presence of Rb+ Ion (pdb code 3fb8). This binding sites where shown with 5.0 Angstroms radius around Rubidium atom. The 3fb8 structure was solved by L.G.CUELLO, V.JOGINI, D.M.CORTES, E.PEROZO, with X-Ray Crystallography technique, brief refinement statistics is given in the table below: Resolution (A) 40.0-3.4 Space group I4 a (A) 155.636 b (A) 155.636 c (A) 73.033 alpha (°) 90.00 beta (°) 90.00 gamma (°) 90.00 Rfactor (%) 28.4 Rfree (%) 30.4 Rubidium Binding Sites: Rubidium binding site 1 out of 4 in 3fb8 Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 1 of Rubidium in the PDB 3fb8. Coordination sphere was calculated for all residues within 5.0 Angstroms distance from the central Rubidium atom, shown by VdW sphere Residues shown as a stick model or VDW spheres: C: Thr75, C: Val76, C: Rb4, conact list: Atom Atom Distance (A) Rb O C:Thr75 3.08 Rb CB C:Thr75 3.56 Rb CG2 C:Thr75 4.74 Rb OG1 C:Thr75 3.16 Rb C C:Thr75 3.93 Rb CA C:Thr75 4.42 Rb N C:Val76 4.90 Rb RB C:Rb4 3.93 interactive model: Rubidium binding site 2 out of 4 in 3fb8 Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 2 of Rubidium in the PDB 3fb8. Coordination sphere was calculated for all residues within 5.0 Angstroms distance from the central Rubidium atom, shown by VdW sphere Residues shown as a stick model or VDW spheres: C: Gly77, C: Tyr78, C: Gly79, conact list: Atom Atom Distance (A) Rb O C:Gly77 3.18 Rb C C:Gly77 4.22 Rb O C:Tyr78 3.11 Rb N C:Tyr78 4.61 Rb C C:Tyr78 3.69 Rb CA C:Tyr78 4.05 Rb N C:Gly79 4.61 interactive model: Rubidium binding site 3 out of 4 in 3fb8 Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 3 of Rubidium in the PDB 3fb8. Coordination sphere was calculated for all residues within 5.0 Angstroms distance from the central Rubidium atom, shown by VdW sphere Residues shown as a stick model or VDW spheres: conact list: Atom Atom Distance (A) interactive model: Rubidium binding site 4 out of 4 in 3fb8 Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 4 of Rubidium in the PDB 3fb8. Coordination sphere was calculated for all residues within 5.0 Angstroms distance from the central Rubidium atom, shown by VdW sphere Residues shown as a stick model or VDW spheres: C: Thr75, C: Val76, C: Gly77, C: Rb1, conact list: Atom Atom Distance (A) Rb O C:Thr75 3.18 Rb C C:Thr75 4.32 Rb O C:Val76 2.93 Rb N C:Val76 4.83 Rb C C:Val76 3.76 Rb CA C:Val76 4.29 Rb O C:Gly77 4.02 Rb N C:Gly77 4.70 Rb C C:Gly77 4.87 Rb CA C:Gly77 4.98 Rb RB C:Rb1 3.93 interactive model: