Potassium in the structure of Dihydropteroate Synthetase Complexed With Oh-CH2-Pterin- Pyrophosphate From Staphylococcus Aureus (pdb 1ad4)

The binding sites of Potassium atom in the structure of Dihydropteroate Synthetase Complexed With Oh-CH2-Pterin- Pyrophosphate From Staphylococcus Aureus (pdb code 1ad4). This binding sites where shown with 5.0 Angstroms radius around Potassium atom. The 1ad4 structure was solved by C.OEFNER, D.KOSTREWA, with X-Ray Crystallography technique, brief refinement statistics is given in the table below: Resolution (A) 13.0-2.4 Space group P1211 a (A) 65.748 b (A) 42.142 c (A) 99.040 alpha (°) 90.00 beta (°) 106.06 gamma (°) 90.00 Rfactor (%) 17.6 Rfree (%) n/a Potassium Binding Sites: Potassium binding site 1 out of 2 in 1ad4 Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 1 of Potassium in the PDB 1ad4. 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: Ile74, A: Val75, A: Gly76, A: Phe77, A: Val79, A: Lys80, A: Ile81, A: Asp100, A: Hoh383, A: Hoh384, conact list: Atom Atom Distance (A) K O A:Ile74 4.67 K O A:Val75 2.70 K CG2 A:Val75 4.52 K C A:Val75 3.72 K CA A:Val75 4.38 K O A:Gly76 4.67 K N A:Gly76 4.68 K C A:Gly76 4.44 K CA A:Gly76 4.83 K O A:Phe77 2.84 K N A:Phe77 4.44 K C A:Phe77 4.02 K CA A:Phe77 4.77 K O A:Val79 2.76 K N A:Val79 4.24 K C A:Val79 3.93 K CA A:Val79 4.81 K N A:Lys80 4.79 K CA A:Lys80 4.72 K N A:Ile81 4.97 K CG1 A:Ile81 4.27 K OD2 A:Asp100 4.49 K O A:Hoh383 2.87 K O A:Hoh384 2.62 interactive model: Potassium binding site 2 out of 2 in 1ad4 Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 2 of Potassium in the PDB 1ad4. 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: Ile74, B: Val75, B: Gly76, B: Phe77, B: Asp78, B: Val79, B: Lys80, B: Ile81, B: Asp100, B: Hoh310, B: Hoh311, B: Hoh399, conact list: Atom Atom Distance (A) K O B:Ile74 4.82 K O B:Val75 3.01 K CG2 B:Val75 4.78 K C B:Val75 3.93 K CA B:Val75 4.53 K O B:Gly76 4.90 K N B:Gly76 4.87 K C B:Gly76 4.61 K O B:Phe77 2.47 K N B:Phe77 4.46 K C B:Phe77 3.68 K CA B:Phe77 4.64 K N B:Asp78 4.58 K C B:Asp78 4.71 K CA B:Asp78 4.64 K O B:Val79 2.39 K N B:Val79 3.75 K C B:Val79 3.57 K CG1 B:Val79 4.93 K CA B:Val79 4.38 K N B:Lys80 4.53 K CA B:Lys80 4.65 K N B:Ile81 4.90 K CG1 B:Ile81 4.40 K OD2 B:Asp100 4.51 K O B:Hoh310 4.08 K O B:Hoh311 4.63 K O B:Hoh399 2.58 interactive model: