Sodium in the structure of Crystal Structure of Nak Channel D66N Mutant (pdb 2q69)

The binding sites of Sodium atom in the structure of Crystal Structure of Nak Channel D66N Mutant (pdb code 2q69). This binding sites where shown with 5.0 Angstroms radius around Sodium atom. The 2q69 structure was solved by A.ALAM, N.SHI, Y.JIANG, with X-Ray Crystallography technique, brief refinement statistics is given in the table below: Resolution (A) 50.0-2.4 Space group C2221 a (A) 82.345 b (A) 85.710 c (A) 130.648 alpha (°) 90.00 beta (°) 90.00 gamma (°) 90.00 Rfactor (%) 24 Rfree (%) 26.7 Sodium Binding Sites: Sodium binding site 1 out of 2 in 2q69 Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 1 of Sodium in the PDB 2q69. 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: Val64, A: Gly65, A: Asn66, A: Gly67, B: Val64, B: Gly65, B: Asn66, B: Gly67, B: Ca115, conact list: Atom Atom Distance (A) Na O A:Val64 4.41 Na O A:Gly65 4.13 Na C A:Gly65 4.08 Na CA A:Gly65 4.40 Na O A:Asn66 4.39 Na N A:Asn66 4.39 Na C A:Asn66 4.33 Na CA A:Asn66 4.81 Na N A:Gly67 4.47 Na CA A:Gly67 4.70 Na O B:Val64 4.25 Na O B:Gly65 4.19 Na C B:Gly65 4.14 Na CA B:Gly65 4.53 Na O B:Asn66 4.69 Na N B:Asn66 4.38 Na C B:Asn66 4.46 Na CA B:Asn66 4.72 Na N B:Gly67 4.56 Na CA B:Gly67 4.97 Na CA B:Ca115 4.26 interactive model: Sodium binding site 2 out of 2 in 2q69 Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 2 of Sodium in the PDB 2q69. 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: Thr63, A: Val64, B: Thr63, B: Val64, B: Ca115, conact list: Atom Atom Distance (A) Na O A:Thr63 3.50 Na CB A:Thr63 4.33 Na OG1 A:Thr63 3.67 Na C A:Thr63 4.26 Na N A:Val64 4.93 Na CA A:Val64 4.98 Na O B:Thr63 3.47 Na CB B:Thr63 4.14 Na OG1 B:Thr63 3.42 Na C B:Thr63 4.24 Na CA B:Thr63 4.91 Na N B:Val64 4.97 Na CA B:Ca115 4.22 interactive model: