Potassium in the structure of Crystal Structure of "Truncated" Hemoglobin N (Hbn) From Mycobacterium Tuberculosis, Soaked With Xe Atoms (pdb 1s56)

The binding sites of Potassium atom in the structure of Crystal Structure of "Truncated" Hemoglobin N (Hbn) From Mycobacterium Tuberculosis, Soaked With Xe Atoms (pdb code 1s56). This binding sites where shown with 5.0 Angstroms radius around Potassium atom. The 1s56 structure was solved by M.MILANI, A.PESCE, Y.OUELLET, S.DEWILDE, J.FRIEDMAN, P.ASCENZI, M.GUERTIN, M.BOLOGNESI, with X-Ray Crystallography technique, brief refinement statistics is given in the table below: Resolution (A) 50.0-2.4 Space group P212121 a (A) 44.321 b (A) 61.959 c (A) 90.747 alpha (°) 90.00 beta (°) 90.00 gamma (°) 90.00 Rfactor (%) 19.4 Rfree (%) 27.7 Potassium Binding Sites: Potassium binding site 1 out of 1 in 1s56 Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 1 of Potassium in the PDB 1s56. 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: Gln79, A: Val80, A: His81, A: Gln82, A: Arg84, A: Hoh435, conact list: Atom Atom Distance (A) K O A:Gln79 2.77 K C A:Gln79 3.91 K O A:Val80 3.19 K N A:Val80 4.47 K C A:Val80 3.59 K CA A:Val80 4.07 K O A:His81 4.98 K N A:His81 4.25 K C A:His81 4.41 K CA A:His81 4.72 K O A:Gln82 2.85 K NE2 A:Gln82 4.79 K N A:Gln82 4.07 K CB A:Gln82 4.67 K CD A:Gln82 4.73 K C A:Gln82 3.92 K CG A:Gln82 3.69 K CA A:Gln82 4.41 K CG A:Arg84 4.53 K NE A:Arg84 4.39 K NH2 A:Arg84 4.89 K O A:Hoh435 4.17 interactive model: