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 |
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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:
| 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:
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