Potassium in the structure of Crystal Structure of Yeast Acetohydroxyacid Synthase in Complex With A Sulfonylurea Herbicide, Tribenuron Methyl (pdb 1t9a)

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 Potassium Binding Sites: 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 interactive model: