The binding sites of Potassium atom in the structure of Crystal Structure of Yeast Acetohydroxyacid Synthase in Complex With A Sulfonylurea Herbicide, Tribenuron Methyl (pdb code 1t9a). This binding sites where shown with 5.0 Angstroms radius around Potassium atom. The 1t9a structure was solved by J.A.MCCOURT, S.S.PANG, L.W.GUDDAT, R.G.DUGGLEBY, with X-Ray Crystallography technique, brief refinement statistics is given in the table below:
Resolution (A) | 50.0-2.6 | Space group | P422 | a (A) | 154.586 | b (A) | 154.586 | c (A) | 178.799 | alpha (°) | 90.00 | beta (°) | 90.00 | gamma (°) | 90.00 | Rfactor (%) | 15.6 | Rfree (%) | 19.2 |
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Potassium binding site 1 out of 2 in 1t9a
|  Click to enlarge |  Click to enlarge | Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 1 of Potassium in the PDB 1t9a. 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: A: Gln343, A: Asp350, A: Tyr460, A: Ala505, A: Gln506, A: His507, A: Trp508, A: Thr509, A: Trp510, A: Hoh4179, A: Hoh4497, A: Hoh4696, A: Hoh4857, | conact list:
Atom | Atom | Distance (A) | K | NE2 A:Gln343 | 3.58 | K | OE1 A:Gln343 | 2.80 | K | CD A:Gln343 | 3.50 | K | CG A:Gln343 | 4.87 | K | OD2 A:Asp350 | 2.89 | K | OD1 A:Asp350 | 3.87 | K | CG A:Asp350 | 3.77 | K | CE1 A:Tyr460 | 4.77 | K | O A:Ala505 | 3.99 | K | C A:Ala505 | 4.98 | K | O A:Gln506 | 2.80 | K | C A:Gln506 | 3.76 | K | CA A:Gln506 | 4.53 | K | N A:His507 | 4.62 | K | C A:His507 | 4.58 | K | CA A:His507 | 4.77 | K | N A:Trp508 | 4.41 | K | C A:Trp508 | 3.87 | K | CA A:Trp508 | 4.85 | K | O A:Trp508 | 2.67 | K | N A:Thr509 | 4.66 | K | CA A:Thr509 | 4.50 | K | N A:Trp510 | 4.82 | K | CD1 A:Trp510 | 4.26 | K | NE1 A:Trp510 | 4.68 | K | O A:Hoh4179 | 3.26 | K | O A:Hoh4497 | 3.61 | K | O A:Hoh4696 | 4.87 | K | O A:Hoh4857 | 2.80 |
| interactive model:
| Potassium binding site 2 out of 2 in 1t9a
|  Click to enlarge |  Click to enlarge | Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 2 of Potassium in the PDB 1t9a. 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: B: Gln343, B: Asp350, B: Tyr460, B: Ala505, B: Gln506, B: His507, B: Trp508, B: Thr509, B: Trp510, B: Hoh4247, B: Hoh4906, | conact list:
Atom | Atom | Distance (A) | K | NE2 B:Gln343 | 3.46 | K | OE1 B:Gln343 | 2.79 | K | CD B:Gln343 | 3.42 | K | CG B:Gln343 | 4.78 | K | OD2 B:Asp350 | 2.81 | K | OD1 B:Asp350 | 4.02 | K | CG B:Asp350 | 3.78 | K | CE1 B:Tyr460 | 4.74 | K | O B:Ala505 | 3.84 | K | C B:Ala505 | 4.84 | K | O B:Gln506 | 2.60 | K | C B:Gln506 | 3.66 | K | CA B:Gln506 | 4.38 | K | N B:His507 | 4.63 | K | C B:His507 | 4.72 | K | CA B:His507 | 4.86 | K | N B:Trp508 | 4.23 | K | C B:Trp508 | 3.79 | K | CA B:Trp508 | 4.72 | K | O B:Trp508 | 2.63 | K | N B:Thr509 | 4.62 | K | CA B:Thr509 | 4.55 | K | N B:Trp510 | 4.93 | K | CD1 B:Trp510 | 4.23 | K | NE1 B:Trp510 | 4.51 | K | O B:Hoh4247 | 2.71 | K | O B:Hoh4906 | 4.70 |
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