Sodium in the structure of Porcine Pancreatic Elastase/Na-Complex (pdb 1lkb)

The binding sites of Sodium atom in the structure of Porcine Pancreatic Elastase/Na-Complex (pdb code 1lkb). This binding sites where shown with 5.0 Angstroms radius around Sodium atom. The 1lkb structure was solved by M.S.WEISS, S.PANJIKAR, E.NOWAK, P.A.TUCKER, with X-Ray Crystallography technique, brief refinement statistics is given in the table below: Resolution (A) 40.0-1.7 Space group P212121 a (A) 50.170 b (A) 58.060 c (A) 74.340 alpha (°) 90.00 beta (°) 90.00 gamma (°) 90.00 Rfactor (%) 16.9 Rfree (%) 20.3 Sodium Binding Sites: Sodium binding site 1 out of 1 in 1lkb Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 1 of Sodium in the PDB 1lkb. Coordination sphere was calculated for all residues within 5.0 Angstroms distance from the central Sodium atom, shown by VdW sphere Residues shown as a stick model or VDW spheres: A: Glu59, A: His60, A: Asn61, A: Leu62, A: Asn63, A: Gln64, A: Asn65, A: Asp66, A: Glu69, A: Tyr71, A: Hoh557, A: Hoh751, A: Hoh753, conact list: Atom Atom Distance (A) Na OE1 A:Glu59 2.31 Na OE2 A:Glu59 3.78 Na CD A:Glu59 3.35 Na CG A:Glu59 4.65 Na N A:His60 4.56 Na O A:Asn61 2.30 Na N A:Asn61 3.93 Na CB A:Asn61 4.37 Na C A:Asn61 3.44 Na CA A:Asn61 4.14 Na O A:Leu62 4.84 Na N A:Leu62 4.47 Na C A:Leu62 4.60 Na CA A:Leu62 4.61 Na N A:Asn63 4.94 Na O A:Gln64 2.43 Na N A:Gln64 4.33 Na C A:Gln64 3.63 Na CA A:Gln64 4.63 Na N A:Asn65 4.46 Na C A:Asn65 4.44 Na CA A:Asn65 4.37 Na N A:Asp66 3.80 Na CB A:Asp66 4.02 Na OD2 A:Asp66 2.38 Na OD1 A:Asp66 4.18 Na CG A:Asp66 3.33 Na CA A:Asp66 4.52 Na OE1 A:Glu69 4.49 Na OE2 A:Glu69 2.38 Na CD A:Glu69 3.42 Na CG A:Glu69 3.83 Na OH A:Tyr71 4.78 Na O A:Hoh557 2.38 Na O A:Hoh751 4.79 Na O A:Hoh753 4.54 interactive model: